Can you use Bluetooth headphones on a plane? Bluetooth technology has completely changed how people use electronic devices. You can now link multiple devices wirelessly, thereby reducing cable clutter.
Bluetooth headphones are some of the most popular electronic gadgets that people use. However, some factors may limit you from using Bluetooth-enabled devices in certain places.
Before we answer the topical question, let’s go through some relatable scenarios. You are just about to take a long flight with your best carry-on luggagePortable Electronic Devices (PEDs) that you can take with you on an airplane. In this Luggagers article, we are going to cover some of the important things that you need to know about Bluetooth headphones and airplanes.
Without further ado, let’s get right into it;
Can You Use Bluetooth on A Plane?
As of 2013, the Federal Aviation Administration (FAA) gave a green light on the use of radio-transmitting PEDs on airplanes. As such, you can safely use your Bluetooth headphones during your flight. Nonetheless, it is important to keep in mind that each airline has its usage restrictions.
That being said, you should familiarize yourself with the rules and regulations that govern the use of Bluetooth devices. This will help you know the type of electronic gadgets that you can carry to an airplane.
Also, you will know when to use these devices after boarding your flight. Some airlines allow passengers to use Bluetooth devices throughout the flight, while some may prohibit it at certain times.
Most airlines encourage passengers to switch all Bluetooth-enabled devices to airplane mode, especially when the plane is taking off or landing. Some may also apply this rule when the plane is taxiing.
If you are not sure about the airline regulations, you should consider carrying wired headphones as a backup. Moreover, not all airlines provide regulations on the use of Bluetooth devices. Aside from that, airlines change their regulations from time to time.
The important point that you should take home is that most airlines allow passengers to use Bluetooth but with limitations.
Why Do Some Airlines Prohibit The Use of Bluetooth Headphones In Airplanes?
To answer this question, you need an in-depth understanding of how Bluetooth headphones work, and how they can affect airplanes. In a nutshell, Bluetooth is a short-range communications technology that allows two or more devices to communicate wirelessly.
Bluetooth devices have specialized computer chips that transmit and receive radio waves over short distances. The only problem is that these radio waves can affect the plane in multiple ways. For starters, the radio waves from Bluetooth devices can compromise an airplane’s communication systems.
If this happens, the pilots may have a hard time communicating with the air traffic control. This can cause serious problems during takeoff or when the plane is landing. For your safety and that of those around you, you should always switch off all Bluetooth devices when asked by flight attendants.
Besides affecting the communications system, Bluetooth radio waves can also cause airplane instrumentation to malfunction. As you already know, every component on the airplane has a special role that it plays in ensuring the plane stays airborne.
As such, any slight alteration may cause the airplane to lose some of its functions in mid-air. Such events can lead to disastrous outcomes that may cost lives. Also, when you have your headphones on, you won’t hear the instructions provided by flight attendants.
Universal Airline Rules on the Use of Bluetooth Headphones and Other PEDs
As stated earlier, airlines have different regulations when it comes to the use of Bluetooth headphones and other Portable Electronic Devices (PEDs). Nonetheless, some of the rules cut across the board. This means that certain regulations apply to all airlines from different parts of the world.
One of such rules is that passengers should not carry Bluetooth devices that are larger than a smartphone. This also applies to headphones, so ensure that you carry the right size of Bluetooth headphones. You will be happy to know that this regulation only counts when the headphone is folded.
The other universal aviation rule is that all devices on the plane must have an airplane mode. This is a special setting found in portable devices that send and receive radio waves. Airplane mode can be found on mobile phones, tablets, laptops, etc.
This feature is useful because it disables the transmitters and radios found in these devices, thus preventing the transmission of radio waves. As a result, passengers can safely use their devices without interfering with the plane.
Can You Use Bluetooth on Airplane?—Regulations from Top Aviation Regulatory Agencies
When it comes to aviation regulations, each agency oversees the activities of airlines from specific regions around the world. This means that the rules that govern the use of Bluetooth-enabled headphones vary from one agency to another.
As a passenger, you should make it your goal to know all the rules before boarding an airplane. In addition to saving you from getting in trouble with the authorities, you will be at peace knowing that you are doing the right thing.
Here are some of the regulations provided by top agencies;
Federal Aviation Administration (FAA)
As an agency, the Federal Aviation Administration (FAA) issues regulations that keep passengers safe when traveling with airplanes. This agency is in charge of airlines in the United States. As mentioned earlier, the FAA allows passengers to use Bluetooth headphones and other devices during flights.
You can freely use all short-range Portable Electronic Devices without worrying about anything. However, all cellular functions must be disabled using airplane mode.
International Air Transport Association (IATA)
The IATA focuses on providing airlines from different parts of the world with technical standards for safety purposes. According to the International Air Transport Association (IATA), passengers can use Bluetooth headphones in the non-critical stages of the flight.
However, the agency discourages the use of Bluetooth devices during takeoff, landing, climb, or when the plane is taxiing. These regulations are embraced by large airlines like Air China.
Transport Canada Civil Aviation (TCCA)
The TCCA is somewhat strict when it comes to the use of Portable Electronic Devices (PEDs) that transmit radio energy on airplanes.
As such, most Canadian airlines may not allow you to use Bluetooth headphones during flights. To be on the safe side, ensure that your devices are either switched off or on airplane mode. Alternatively, you can use wired headphones.
Which Airlines Allow Passengers To Use Bluetooth Headphones During Flights?
Now that we are done with the airline regulatory agencies, let us look at some of the airlines that allow the use of Bluetooth headphones on airplanes.
-Has no restrictions on Bluetooth devices, so you can use your headphones throughout the flight.
-The airline allows passengers to use Bluetooth headphones during non-critical stages of flight.
-Prohibits the use of Bluetooth headphones when the plane is below 10,000 feet.
-JetBlue permits its passengers to use Bluetooth headphones.
-You can use Bluetooth headphones throughout the flight.
-Has no restrictions on the use of Bluetooth headphones during the flight.
– Discourages its passengers from using Bluetooth headphones during critical stages of the flight.
-You are allowed to use Bluetooth devices when on flight mode.
-Passengers can freely use Bluetooth headphones throughout the flight.
-Like Spirit Airlines, Ryanair allows passengers to use Bluetooth during the entire flight.
Does Airplane Mode affect Bluetooth?—Can you use Bluetooth headphones on a plane?
Since most airlines require you to switch transmitting devices to airplane mode, can you use Bluetooth on a plane with the airplane mode on? Bluetooth technology allows devices to transmit radio energy to compatible gadgets.
Nonetheless, when the airplane mode is active, the transmitters will stop working. Consequently, no radio waves will be sent. Depending on the type of phone that you are using, the airplane mode may or may not disable Bluetooth.
If the former applies in your case, you can turn on the Bluetooth radios independently by toggling the Bluetooth icon on your device.
Can I Use My Bluetooth Headphones With Airplane In-Flight Entertainment Systems?
Most international airlines provide their passengers with entertainment services to prevent boredom. The airplanes have built-in screens from which you can watch movies, podcasts, and other interesting videos during your flight.
Nonetheless, the entertainment systems on most planes are not as advanced. The fact that they don’t use Bluetooth technology means you cannot pair them with your Bluetooth headphones.
Moreover, a good number still use the outdated two-pin AUX system. To achieve a successful connection, you may have to use additional accessories when linking your Bluetooth headphones to the airplane’s entertainment system.
If this doesn’t work, you will just have to entertain yourself using your phone. Besides, it’s always good to be prepared, especially when taking long flights.
Choosing the Right Bluetooth Headphones for Travel
Bluetooth headphones come in different designs and also vary in terms of performance. Additionally, some Bluetooth headphones offer more comfort compared to others. As such, there are several factors that you should put into consideration when choosing Bluetooth headphones.
This is probably the first thing that you should consider when buying Bluetooth headphones. If you know that you will be taking long flights, you should go for headphones with long-lasting batteries.
Most Bluetooth headphones in the market can last up to eight hours on a single charge. However, this may vary depending on the frequency of use.
Only go for Bluetooth headphones that can produce near-perfect audio output. This will provide you with an enjoyable listening experience as you will feel the beet to the max.
When buying Bluetooth headphones, you should consider the quality of the materials from which they are made. You can also check if the housing is waterproof.
When taking long airplane flights, you may have to wear your Bluetooth headphones for an extended duration. Therefore, it would be wise to buy a pair that is not only wearable but also comfortable.
Still, on comfort, you should go for noise-canceling headphones since they allow you to listen to music more peacefully.
Top 3 Best Noise-Canceling Bluetooth Headphones for Airplane Travel
The market has a plethora of Bluetooth headphones, so settling on a particular option can be a bit challenging. To help you out in choosing the right product, here are some of the best Bluetooth headphones that you can buy.
1. Bose QuietComfort 35 II Noise Cancelling Bluetooth Headphones
Bose is proud to present you with a pair of high-performance Bluetooth headphones that you can rely on. Featuring up to three levels of noise cancellation, you can use these headphones just about anywhere. You won’t be affected by background noise, and neither will you distract those around you.
Thanks to its powerful Bluetooth chip, these headphones can pair with compatible devices in a matter of seconds. They will provide you with a frustration-free listening experience in all scenarios. In addition to this, the headphones have amazing personalized settings. As such, you can customize the sound system according to your needs.
By using the Bose Connect app, you will be able to receive system updates regularly. But that is not all; the headphones also feature a dual-microphone system that you can use when answering calls. And because the microphones are noise-rejecting, the person that you are talking to will hear you even in a noisy environment.
Also, the headphones are Alexa-enabled, making them even more convenient. This feature will give you quick and easy access to your music. When it comes to compatibility, the headphones support both Android and iOS operating systems.
The Quietcomfort 35 II comes in black and grey color, so you can choose the shade that matches your preference.
2. Sony WH-1000XM4 Wireless Noise-Canceling Overhead Headphones
Sony is one of the reputable brands that you can count on when it comes to designing Bluetooth headphones. The WH-1000XM4 has great features that any user would like. For starters, it comes with a powerful battery that can last up to 30 hours. The duration may, however, vary depending on how often you use the headphones.
To add to this, the battery has a quick charge function, meaning you won’t have to wait for long hours for it to juice up. These headphones will allow you to hear every tune when listening to music. Plus, the adaptive sound control system gives you the freedom to make custom adjustments.
Moreover, the WH-1000XM4 has a straightforward design, thus making it suitable for all users. It supports multiple device pairing and allows for seamless switching from one gadget to another.
The other feature that is worth mentioning is that the headphones have an auto-pause function. With this feature in place, the music won’t continue playing when you take the headphones off.
Unlike most Bluetooth headphones in its class, the WH-1000XM4 has a touch sensor. With the help of this feature you can answer calls, control volume, play music, skip tracks, etc. And since they are padded, you will enjoy long-lasting comfort.
The voice processing system has up to five built-in microphones, allowing for clear sound transmission. Lastly, these headphones are lightweight, so they won’t wear you down even if you wear them for long hours.
3. Anker AK-A3025011 Hybrid Active Noise-Cancelling Bluetooth Headphones
If you are on a tight budget, the AK-A3025011 may just be the right Bluetooth headphones for you. These headphones will provide you with high-quality music in all environments. They can particularly come in handy when taking long international flights, thanks to their comfortable design.
The battery offers up to 40 hours of continuous playtime, making it an ideal option for long-distance travelers. Nonetheless, when the headphones are on standard mode, the battery can last for an impressive 60 hours.
According to the manufacturer, these headphones can reduce ambient noise and will enable you to listen to your favorite tunes with minimal interference. The noise cancellation technology is effective against mid and low-frequency noise.
If you are into EDM music, you will be happy to know that the AK-A3025011 features reliable BassUp technology. It can also perform automatic adjustments for an enhanced listening experience.
The four microphones allow for maximum audio detection. Since the headphones are foldable, you won’t have a hard time fitting them into your travel bag.
Before boarding an airplane with a backpack, ensure that you go through the regulations provided by the airline. This will help you know whether or not you can use Bluetooth headphones and other Portable Electronic Devices (PEDs) during the flight.
Since each airline has its regulations, you should be more careful when boarding international flights. We have also thought it wise to include some of the best noise-canceling Bluetooth headphones that you can use when flying.


Amazon’s Echo Dot Smart Speaker with Alexa is their most popular voice controlled speak in the range. This slimline speaker is now in its third generation and features a new sleeker design and improved sound over the previous generation Echo Dot. You can ask Alexa questions, set alarms, play music, read the news, check the weather and control other, compatible smart devices around the home.
You can ask Alexa to stream music from various providers. Choose from Amazon Music, Spotify, TuneIn, Apple Music, and many more through the Echo Spot’s vastly improved speaker for a louder and fuller sound.
You can now call almost anyone on your Amazon Echo Spot hands-free, now including UK mobile and residential numbers (from within the UK only), other Amazon Echo Devices, the Alexa App and Skype. Vodaphone customers can link their mobile phone account so they are able to make and receive calls.
The best thing is that Alexa is always getting smarter meaning that your Amazon Echo Dot is always getting smarter and smarter. New skills are continuously being added allowing you to track your fitness, play games and much, much more.
You can talk to your Amazon Echo Dot Smart Speaker from across the room thanks to four far-field microphones that are built into the device. Alexa can literally hear you in every corner of the room.
Want to add more sound? With a built in 3.5mm audio jack you can connect to your existing speakers. If your current speakers allow Bluetooth connections, then your Amazon Echo Dot can connect this way as well.
With your Amazon Echo Dot you can control multiple devices around the home. Adjust the temperature, turn the kettle on, turn lights on and off and much more. The list of thing you can do with your Amazon Echo Dot and Alexa is increasing all the time.
|Size||43 x 99 x 99 mm|
|Weight||300 grams Actual size and weight may vary by manufacturing process|
|Bluetooth Connectivity||Advanced Audio Distribution Profile (A2DP) support for audio streaming from your mobile device to Echo Dot or from Echo Dot to your Bluetooth speaker. Audio/Video Remote Control Profile (AVRCP) for voice control of connected mobile devices. Hands-free voice control is not supported for Mac OS X devices. Bluetooth speakers requiring PIN codes are not supported.|
|Audio||Built-in speaker for voice feedback when not connected to external speakers. 3.5 mm stereo audio output for use with external speakers (audio cable not included).|
|System Requirements||Echo Dot comes ready to connect to your Wi-Fi. The Alexa App is compatible with Fire OS, Android and iOS devices, and also accessible via your web browser. Certain skills and services may require subscription or other fees.|
|Accessibility Features||The Alexa App and Alexa-enabled products include several features for customers with accessibility needs related to vision, hearing, mobility and speech. Click to learn more about the Amazon Echo Dots accessibility features.|
|Included in the Box||Echo Dot, power adaptor (15W) and Quick Start Guide (Click to view the Amazon Echo Dot Quick Start Guide).|
|Model||Echo Dot||Echo||Echo Plus|
|Quick Link||Check the latest price on Amazon||Check the latest price on Amazon||Check the latest price on Amazon|
|Overview||Echo Dot (3rd Gen), add Alexa to any room||Echo (2nd Gen), smart speaker with Alexa and room-filling sound||Echo Plus (2nd Gen), premium sound and built-in smart home hub with Alexa|
|Speaker size||1.6" speaker||2.5" woofer and 0.6 tweeter||3" woofer and 0.8" tweeter|
|Controls compatible smart home devices||Yes||Yes||Yes|
|Built-in Zigbee smart home hub||No||No||Yes|
|Dual-speakers powered by Dolby||No||Yes||Yes|
|Line out with 3.5 mm cable or Bluetooth||Yes||Yes||Yes - Line in and line out|
|Audio calls between Echo devices & Alexa App||Yes||Yes||Yes|


Space station to be quantum communications hub?
点击量： 时间：2019-03-02 12:09:00
By Colin Barras (Image: A Zeilinger) The International Space Station could soon be relaying messages secured using quantum entanglement, if a proposed experiment is accepted by the European Space Agency later this year. If the experiment was successful it would be a step towards unbeatably secure satellite communications between any two points on earth. One form of quantum cryptography exploits the way particles like photons can become “entangled”, into a state where any change to the properties of one affects the other, even across great distances. Einstein famously described it as “spooky action at a distance.” When entangled photons are used to communicate a secret pass-phrase, monitoring their quantum partners makes it possible to know instantly if someone has tried to intercept the message. The current distance record for transmitting entangled photons stands at 144 kilometres, between telescopes in the Canary Islands and Tenerife. The team that set that record, led by Anton Zeilinger at the University of Vienna in Austria, now hopes to smash that figure by transmitting keys over thousands of kilometres using the International Space Station to carry the source of the quantum signals. Their Space-QUEST (Quantum Entanglement for Space Experiments) proposal involves strapping a device containing an ultraviolet laser to the outside of the European Columbus science laboratory on the ISS. That transceiver would generate pairs of entangled photons, transmitting one to each of two receiving stations on the Earth below. “Using a satellite, we can connect between points a few thousand kilometres apart,” says Zeilinger. “Ultimately, we could use quantum cryptography between any two points of the world.” By checking that certain quantum properties of the photon pairs matched,


Brief introduction of Xushui cast iron manhole cover
One. System Overview:
Alarm information transmission method: SMS.
Alarm receiving method: SMS transceiver, alarm interface, electronic map display alarm location.
Installation method: The manhole cover alarm has no external connection and is fixed to the bottom of the manhole cover by two screws.
Tracking and positioning: GPS satellite positioning.
Power supply: disposable lithium battery. Replacement cycle is more than two years.
two. Equipment needed:
2. SMS transceiver (Figure 1) and power adapter (5-7VDC, power supply current is not less than 2A);
3. Telecom CDMA UIM card;
4. RS232 connection cable.
1. Metal manhole cover (with gap) or composite manhole cover (no need to open gap).
2. Manhole cover alarm.
3. Disarm the remote control.
three. System installation instructions:
(A) monitoring center
1. Run the CDMA alarm management software "Hangzhou Telecom Manhole Cover Wireless Anti-theft Alarm System" on the computer
Monitoring and management platform (see "Hangzhou Telecom Manhole Cover Wireless Anti-theft Alarm System Software User Manual").
2. Insert the UIM card of the SMS transceiver, and then plug it in.
Be sure to insert the UIM card first, and then plug in the power! !!
3. Connect the SMS transceiver to the computer via RS232 cable. If the computer does not have a 232 port, you can connect it through a USB to 232 port cable.
4. After the SMS transceiver is plugged in, wait for about 8 seconds. The green indicator light will stay on, indicating that the SMS transceiver is online.
5. Run and operate the management software according to the "Hangzhou Telecom Manhole Cover Wireless Anti-theft Alarm System Software User Manual".
(II) Manhole cover alarm terminal
1. The bottom surface of the metal manhole cover is installed with reinforcing ribs (Figure 4), forming a space whose area and depth can be put into the manhole cover alarm. The alarm is only a sealed housing part, the antenna and sensor are inside, there is no external connection, you only need to place the manhole cover alarm in the shell formed by the ribs on the bottom of the metal manhole cover (Figure 2), through two stainless steel screws It is fixed on the bottom surface of the manhole cover, and the manhole cover can be covered on the well circle (Figure 3).
2. Operate the manhole cover alarm (Fig. 5A) before being installed on site. After the cover is installed on the well circle, you can arm it with a wireless remote control (Fig. 4B) to put the alarm in the alarm state.


Healthcare companies still extensively use faxes for communication and in some hospitals, as much as 75% of all communications are via faxes. Fax machines are often viewed as secure and would unlikely be a target for hackers, although new research has shown that not only can a threat actor gain full control of the fax and any information sent through it, the fax can be used to gain network access and steal data through the phone line.
Researchers at Check Point detected flaws in the fax protocol and successfully exploited them to turn the fax machine into a backdoor that allowed network access. They successfully deployed malware on the network via the fax machine which searched for sensitive files and transmitted them back via fax.
The researchers wrote a script and sent it along with an image file to a targeted fax machine through the phone line. The fax machine received the image file, loaded it into the memory, and sent it for printing. The researchers were able to trigger a buffer overflow condition which allowed remote code execution, letting them gain full control of the fax machine. The fax machine was networked, so it was possible to identify computers on the same network and use the Eternal Blue and Double Pulsar to distribute malware to those devices. The malware was programmed to search for certain types of files and send them back to the researchers via fax. No internet access was needed. The attack was played out entirely via the phone line.
Check Point conducted the attack on an HP OfficeJet Pro all-in-one fax printer, although the same flaws were present in many other manufacturers’ devices. Check Point informed HP about the vulnerability and a patch has now been released to correct the flaw and prevent such an attack from occurring. Other manufacturers are expected to release patches shortly.
Check Point notes that it is not only all in one printers that are vulnerable. Stand alone fax machines could similarly be attacked using the same method and fax to email services could also be vulnerable to this type of attack.
Check Point recommends all companies that still utilize fax machines should check to make sure that their devices can be updated. When patches are issued, they should be applied promptly. It is also important to use fax machines on isolated networks. Healthcare companies should not use fax machines on networks where protected health information could be accessed.
The Check Point team appear to be the first security researchers to discover the flax, and no reports have been received to suggest this method of gaining network access is currently being used, although that may not remain the case for long.


Huge Internet Speed Boosts Announced for BT, Sky and TalkTalk Customers – Check the Locations Here
Tuesday, 13th October 2020
Do you put up with poor broadband speeds because you don’t want to pay out for a costly high-speed package? Well, your internet frustrations could soon be over!
Huge broadband boosts are coming to BT, Sky and TalkTalk customers in over 50 locations across the UK. Finally, some good news in 2020! Keep reading to see if your home is in one of the lucky areas...
Openreach, who looks after the internet infrastructure that providers such as BT, Sky and TalkTalk use, are replacing their old analogue lines with full-fibre cables. This could see speeds go from under 1Mbps to 100Mbps and higher!
The anticipated upgrade is being rolled out in 51 locations across the country and will benefit around 500,000 homes. BT, Sky and TalkTalk broadband customers could see their internet skyrocket from a snail’s pace to lightning fast overnight.
The type of connection being installed by Openreach is called FTTP, or Fibre to the Premises. This delivers data along next-generation fibre optic cables all the way to your home, which doesn’t slow down your internet speed, unlike copper wiring.
With FTTP, homes can enjoy speeds of up to 1Gbps – capable of downloading a HD movie in just 2 minutes or a full album in 8 seconds. Now, that’s impressive!
Mark Logan, Director of Products & Customer Commercial Proposition, said: “We’re stepping up our plans to stop selling our legacy analogue services and instead focus on providing people with a modern, future-proof full-fibre connection that can deliver all manner of new digital services over the top.”
"Full Fibre or ‘Fibre to the Premises’ technology (FTTP) will be available to more than 75% of homes in these 51 new locations by October 2021, as it makes no sense - both operationally and commercially - to keep the old and new network running side-by-side."
Will your home benefit from the upgrade?
It is said that approximately 500,000 homes across the country will get to enjoy superfast internet speeds. Here is a list of the areas due to get the broadband boost:
Isle of Anglesey
Newtownards & Bangor


Belkin recently launched its new mobile accessories in the Philippines including wireless chargers for the latest iPhone models.
The new Belkin Wireless Charging Pad for iPhone 8, 8+, and X allows users to just lay their phone onto the charging pad and go.
They can charge in multiple orientations: portrait, landscape, or anywhere in between. They don’t even have to remove the phone case as Belkin’s wireless charger works through most lightweight plastic cases.
The secret to how wireless charging works? Electromagnetic induction. When the signal generated by the transmitter coil in the charging base senses the one in the receiver coil of the iPhone, the electrons inside the transmitter coil start to flow around it.
This generates a magnetic field, which is sensed by the electrons in the receiver coil. The electrons trapped inside the receiver coil then start to flow around it and generate electricity, which eventually powers the battery in the iPhone.
If you must use cables though, Belkin also has the Mixit DuraTek which beats most lightning cable-related problems such as fraying and breakage.
Its double-braided nylon outer covering protects the wires, which are especially reinforced with Kevlar, the same high-strength synthetic fiber used in bullet-resistant vests, helmets, and extreme sports gear. Of course, it is also Apple MFi Certified.
Belkin also has the TrueClear Pro 2.0 Overlay (Corning glass or Tempered glass) which keeps your iPhone screen scratch-free and provides it extra protection from drops without sacrificing its premium look and touchscreen sensitivity.
No need to worry about misalignment, bubbles, and dust because at Power Mac Center, it is applied by a trained professional using the proprietary Belkin applicator machine.
The Belkin Wireless Charging Pad (starts at P1,690), the Belkin Mixit DuraTek (starts at P1,690), and Belkin TrueClear Pro 2.0 Overlay (starts at P1,090) are now available in select Power Mac Center stores nationwide. (Source and photo credit: Newsbytes.ph)


Further to the announcement earlier this week of the seed funding from the United Kingdom’s Department for Transport for our “Vehicle to grid controller with modular communications” project we have another exciting announcement to make this afternoon.
First of all please feel free to take a close look at the module that provides our controller with its LTE-M functionality. Note that it is in single antenna mode in the picture, but supports a second antenna if necessary:
Secondly also bear in mind that, as an eagle eyed reader from Cambridge spotted earlier this week, the module shown above is mounted in what we prefer to refer to as the “V2G EVSE V2x controller with modular communications”.
Next we invite you to read yesterday’s press release from Digi International® headlined “Digi XBee3 Cellular LTE-M Smart Modem and Development Kits Now Available“:
MINNETONKA, Minn., Aug. 8, 2018 – Digi International®, (NASDAQ: DGII, www.digi.com), a leading global provider of Internet of Things (IoT) connectivity products and services, today announced the immediate availability of the Digi® XBee3™ Cellular LTE-M development kits, featuring Digi’s next-generation smart cellular modem.
This LTE-M certification, to be followed by the certification of Digi XBee3 Cellular NB-IoT in October 2018, allows Digi to bring one of the first LPWAN, software-defined technology-agile modems capable of offering Cat-M or NB-IoT on a single, compact footprint. Designed to be customer-configurable, developers can easily standardize and futureproof their IoT designs by simply changing modems and SIMs to leverage different wireless protocols without having to redesign hardware for different regions or applications.
Ushering in a much more simplified way of testing designs and incorporating cellular connectivity into wireless solutions, the new Digi XBee3 Cellular LTE-M smart modem is integrated into the development kit via a 20-pin Digi XBee socket, ultimately allowing for solution connectivity via millions of sockets already deployed around the globe. The module can also be easily configured and controlled from a centralized platform such as the Digi Remote Manager®.
Digi International is an Amazon Web Services (AWS) Advanced Technology Partner in the AWS Partner Network (APN), and the Digi XBee3 Cellular LTE-M is a smart cellular modem supported by AWS IoT Core. With built-in Digi TrustFence® security, the module’s identity and data privacy features use more than 175 controls to protect against new and evolving cyber threats. It also provides the tools to secure connected devices, including data in motion with TLS 1.2 encryption and bi-directional authentication – required for AWS IoT connectivity.
You may well wish to read the Digi press release in full, and I can reveal that we didn’t make use of Digi’s development kit when constructing our controller. However I’m afraid we’ll have to leave you to speculate for a while about how the V2G EVSE V2x controller delivers its NB-IoT functionality.
If you happen to have noticed that we’re based in the UK you may also be speculating about the SIM card plugged into the Digi LTE-M module shown above? If so we can put you out of your misery on that front at least. We paid the carriage across the pond and received this from Hologram in return:
“A single SIM for all of Earth”!
We haven’t tested that claim of course, but it certainly works for us here in sunny South West England


Teldat: Important Considerations When Shopping for a Home Router
When shopping for a reliable WiFi, it is never easy finding one that is also easy to set up and configure. You might have heard of weird terms like Smart Connect, QoS, Beamforming, and MU-MIMO, and seen wireless router providers bragging their AC and bandwidth, but knowing the basic information is what is more important. Never purchase a router below AC1200 such as AC900 or AC750 because these are an old router and they are not a good option for a modern smart home, and it is important to have a router that is dual-band or more. Your smart home needs stability, speed, and security most especially for increasing number of devices that are connected.
It is best to shop a wireless router with dual-band or more, so you are able to see two or more wireless networks in your home, one compatible for old networking devices, and the others for newer or modern networking devices. Internet service providers either offer free wireless router into the internet package, while others charge for a monthly equipment rental fee. If you are living in the United States and you’re planning to keep the same network, the most cost-effective way is owning your very own wireless router. You can check different routers companies in the market today and compare the rates and features of their home wireless networks, and even though you have a free router, it is best to have your own wireless router that can provide a better performance and speed. Remember that buying your own home wireless router doe not always guarantee a better performance, but you have more options, you can save cash, more network storage, and better control. The standards for wireless technology have changed over the last ten years, and most newer smartphones, tablets, and laptops use the newer standards, 802.11ac, with faster speeds. Remember that the life span of a router does not last forever.
The price of wireless routers range from $15 to $400 depending on the features and your needs. There are two reasons why high-end router is difficult to recommend than an average consumer due to advancement of technology and moving fast networking hardware. You don’t have to spend much in buying high-end router if you are a power user, a price range of $100 to $200 is enough to accommodate your internet needs at home. Although gigabit is not necessary, it is a router for futureproofing and you might need one before your next upgrade. If you are looking for a home wireless router, feel free to check our website or homepage now! Allow us to help you find the best home wireless router for your personal use along with your multiple devices. Get a new home wireless router today and experience better speed and performance like no other router available int he market today at a very affordable price!


Why is WhatsApp Business API a must-have business communication solution?
WhatsApp is one of the most commonly used social media platforms that need no introduction. We are very familiar with the reach and platform that WhatsApp provides. The WhatsApp Business Platform allows small, medium as well as large businesses to communicate with their customers for delivering information and to sell products. By using the Application Programming Interface (API), businesses can reach thousands of agents and bots to connect with customers programmatically and manually. WhatsApp API is tailored for large brands or businesses that demand seamless integration with other channels and data sets.
WhatsApp Business API service allows the business to communicate with customers all over the world. It too allows designing a business profile but WhatsApp API service users can get a verified green tick to add brand quality and authentication. With WhatsApp API, a business can create chatbots that enhance communication flow. With the integration of the WhatsApp Business API service, multiple customers can be entertained at the same time, from any part of the globe and at a given point in time as it can send bulk notifications. Instant order placement and payment confirmation, booking confirmation, and the status of the order are some of the important features offered by the WhatsApp API service. It can be integrated with other channels; it uses automation and multiple agents can access it.
While looking for the best WhatsApp Business API in India, a business needs to look for the following features. WhatsApp Business API is a must-have business communication solution for the following reasons:
- 24×7 supports: WhatsApp Business API ensures 24×7 support for any customer service. Through the Chatbot, a business can be present around the close for their customers. It helps in identifying potential customers and also maintains seamless communication by sharing different information, and alerts to regular customers. The multilingual feature of the WhatsApp Business API helps businesses to reach any part of the globe without much afford. Also, both, multilingual and 24x 7 feature makes business accessible for service for any time zone.
- Multi-channel platform: It provides a single platform for all business communication channels. This gives an organized structure to any business. A customer can easily reach the business from any channel. It makes navigation easier without losing time waiting.
- Integrate CRM: It organizes and integrates CRMs that help in customer service delivery. One of the benefits of integrating CRM is that it allows businesses to share catalogs, images, locations, documents, and videos, audio with customers. It also helps businesses to share updates, tracking options, and payment status of the product and service with the customers.
- Let customers multitask: Customer satisfaction is one of the major aims of any business. WhatsApp Business API provides flexibility to customers to leave and re-enter the conversation, anytime or anywhere.
- Notifications: It helps a business to send notifications on WhatsApp to customers regarding the information on order updates, reminders, appointments, and many more. Automated notifications in bulks can help a business in reaching more customers with ease and also reduced the workload for the agents. Thus, never losing a single customer out on the information communication radar.
- IVR deflection: It helps in quick service thus enhancing customer satisfaction. It simply routes incoming calls to WhatsApp and optimizes call volumes and wait time. It boosts the first contact resolution rate and customer satisfaction.
- Offer rich experience to the customers: WhatsApp Business API provides an enjoyable customer experience through the rich social media presence and business representation. A business with WhatsApp API can add images, videos, audio messages, gifs, stickers, files, dynamics CTAs and many more. A business can share shares product pictures, demo videos, links, etc. to the customers to offer better engagement. A business can send them tailored communications to encourage cart abandoners to complete their purchase which helps to increase interaction, and augment the message with eye-catching product photos.
There are many cloud-based communication solution providers that a business can choose to get their best WhatsApp Business API in India. However, the most demanded and trusted provider is Knowlarity. Used by more than 6000 organizations, businesses, and industries in more than 60 countries of the world. Knowlarity has proved itself to be one of the best providers of WhatsApp Business API in India.


Link-Sun international (Hong KONG) limited, focus on LCD display products development, manufacture，sales&services. The main products are standalone media player, network digital signage media player,wall mounted LCD digital signage display,floor standing LCD digital signage display etc, the products are widely used in traffic, bank, hospital, education, retail,by means of advanced technology,high quality products and diligent service, Link-Sun grows fast to be the specialist digital signage providers in China.
Now Link-Sun provides total solution for digital signage not only supply different display sizes from 10" to 65" but also supply relevant software, value added services and customized products.
With more than 100 employees and 1500m plant,Link-Sun can cover the full production process for all digital signage products, it can not only make mass productions for customers but can also make OEM/ODM.base on different requirements from customers.
Link-Sun enjoys working closely with customers to drive development and applications in digital signage technologies.


WiFi Broadband installation
What we do is we come and install a wireless Router which creates a wireless signal, which all your WiFi enable Gadgets will be able to pickup and use the internet connection.
We have experience in working with local telecom companies to install wireless broadband solutions to suit everone from the average user to the internet hungry Gamer.
Prices start from £30
Do you want to be future proofed and fibre ready? We offer the latest routers to get the best performance and speed out of your internet.


All services are operational.
2023-09-13: The basic VPN servers quota was increased from 100 to 200 GB per month.
2022-09-26: The stunnel service was shut down.
2023-06-29: Moldova basic VPN server downtime from 18:52 UTC to 19:01 UTC, due to an emergency hardware maintenance.
2023-01-18: Netherlands VPN infrastructure downtime from 14:01 UTC to 14:13 UTC, due to a power outage.
2023-01-08: Netherlands VPN infrastructure downtime from 02:02 UTC to 08:25 UTC. The WireGuard and v1/v2 services failed to restart properly to due to a script error.


Complete the Microsoft Azure Cloud Challenge and get a 50% discount on your exam vou
1) What is a Link? A link refers to the connectivity between two devices. It includes the type of cables and protocols used in order for one device to be able to communicate with the other.
2) What are the layers of the OSI reference model? There are 7 OSI layers: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer and Application Layer.
3) What is backbone network? A backbone network is a centralized infrastructure that is designed to distribute different routes and data to various networks. It also handles management of bandwidth and various channels.
4) What is a LAN? LAN is short for Local Area Network. It refers to the connection between computers and other network devices that are located within a small physical location.
5) What is a node?
A node refers to a point or joint where a connection takes place. It can be computer or device that is part of a network. Two or more nodes are needed in order to form a network connection.
6) What are routers? Routers can connect two or more network segments. These are intelligent network devices that store information in its routing table such as paths, hops and bottlenecks. With this info, they are able to determine the best path for data transfer. Routers operate at the OSI Network Layer.
7) What is point to point link? It refers to a direct connection between two computers on a network. A point to point connection does not need any other network devices other than connecting a cable to the NIC cards of both computers.
8) What is anonymous FTP? Anonymous FTP is a way of granting user access to files in public servers. Users that are allowed access to data in these servers do not need to identify themselves, but instead log in as an anonymous guest.
9) What is subnet mask? A subnet mask is combined with an IP address in order to identify two parts: the extended network address and the host address. Like an IP address, a subnet mask is made up of 32 bits.
10) What is the maximum length allowed for a UTP cable? A single segment of UTP cable has an allowable length of 90 to 100 meters. This limitation can be overcome by using repeaters and switches.


Archive for " October, 2011 "
Written by admin on October 31, 2011
ViaSat-1 High-Capacity Satellite Launch Successful, ViaSat-1 is high capacity satellite in the world which was launched successfully. ViaSat-1 provides fast and safe communication and offers products for networking and also organizes network services for enterprise IP application. ViaSat is also provides network-centric martial communications and encryption technologies to American and allied government. ViaSat-1 High-Capacity Satellite Launch Successful ILS President, Frank McKenna said “It is always an honor to be entrusted to launch any of our customers’ satellites on ILS Proton. With ViaSat-1, it is especially so, as we support ViaSat’s innovative business plan for expanded high-speed broadband services with the launch of ...No Comments


In 2010, there are 1.8 billion Internet users and a world population of 6.7 billion. In 2020, it is estimated that there will be five billion Internet users.
The estimated world population in 2009 was 6,767,805,208. The estimated number of Internet users on December 2000 was 360,985,492. The latest data shows the current number of Internet users at 1,802,330,457. The penetration of the Internet into the population is 26.6 percent. The growth of Internet users from 2000 to 2009 was 399.3 percent.
Via: Hudson Horizons
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CWDM cost efficient transport in optical networks
Coarse Wavelength Division Multiplexing (CWDM) is the technology of choice for cost efficiently transporting large amounts of data traffic in telecoms or enterprise networks. Optical networking and especially the use of CWDM technology has proven to be the most cost efficient way of addressing this requirement.
CWDM typically has the capability to transport up to 16 channels (wavelengths) in the spectrum grid from 1270 nm to 1610 nm with a 20 nm channel spacing. Each channel can operate at either 2.5, 4 or 10 Gbit/s. CWDM can not be amplified as most of the channels are outside the operating window of the Erbium Doped Fibre Amplifier (EDFA) used in Dense Wavelength Division Multiplexing (DWDM) systems. This results in a shorter overall system reach of approximately 100 kilometers. However, due to the broader channel spacing in CWDM, cheaper un-cooled lasers are used, giving a cost advantage over DWDM systems.
Transmode uses both CWDM and DWDM technologies as a means of transporting different types of services, e.g. Ethernet, SDH/SONET, and Fibre Channel (FC) in metro networks. CWDM is the most cost efficient of the two WDM variants, but has limitations in the distance over which the traffic is transported and in total channel count. With Transmode CWDM solutions, the distance supported is up to 100 km.
Both Transmode’s TM-Series and TS-Series product families are CWDM and DWDM agnostic. This means a CWDM network can initially be deployed with either product series and when required, the network can be simply upgraded to a hybrid CWDM/DWDM network using common cards and pluggable optics. Therefore, by deploying Transmode’s CWDMor DWDM based solutions the lowest possible day 1 cost are enabled without sacrificing the scalability of the network.
For more information ,please contact us by below form, we will respond to your inquiry within 24 hours by email.


Method To Connect Android Mobile To Led Tv :- If you have Led TV in your house then sometimes you have a feeling that you can connect with your android mobile led tv and play on music, song, video, and games Led tv from inside your android mobile but much Not all people know that it can be done very easily.
The display of our Android phone is small enough, which we cannot enjoy playing videos and games on our mobile. If the same video and games we see on the big screen, its fun gets more and more.
So if you have smart and non-smart Led Tv in your house then you can watch your mobile screen on led tv by connecting to your android mobile led tv.
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How To Connect Android Mobile To Led Tv
Now the most important thing is that if you have Led TV in your house then what kind of smart or non-smart is it? Because if you have smart LED TV then you can connect with your android mobile led tv via wifi without any wire.
But if you have a non-smart led tv then you have to use the wire to connect to android mobile led tv. Meaning smart LED TV and non-smart led tv have different ways of connecting with android mobile.
In today’s post, we are going to tell you about the two types of led tv method, which can help you connect with your android mobile led tv. After reading this post, you can connect any kind of Led TV to your android mobile.
1. By screen mirroring
Today everyone has an Android smartphone and the Android phone has a feature that you can connect directly to android mobile led tv This feature is named after screen mirroring
First of all, you want to check the screen mirroring in your smartphone. If your smartphone has a screen mirroring, we can screen mirroring just like we connect wifi.
You can connect to your android mobile led tv with Screen mirroring. But remember one thing only in smart led tv, because in it you are given the option of wifi direct. You can not use this method in nonsmart led
2. By HDMI cable
You get the HDMI port in every LED TV. Using HDMI cable, you can connect the led tv to both computer and mobile.
To connect Android mobile led tv, put the HDMI cable into a port mobile and connect to another port led.
♦ Then select the HDMI port by connecting it to your mobile by going to source in the led tv.
♦ Whatever you do, your mobile display goes on display led tv Now you can see the video and photo you want to see.
3. By Wifi Direct Method
In every smart led you to get the feature of wifi direct, in which you can connect your wifi to led tv.
♦ First of all, wifi you’re mobile
♦ Then scan wifi in your led tv
Select your mobile wifi Now your mobile screen will show on your lead.
Also Read:- How To Return Amazon Product
4. Connect Android mobile LED TV by USB cable
This option is great for those people who use nonsmart led. This is also the easiest way. Which anyone can easily do. For this, you need a USB cable which is easily available to everyone.
♦ Firstly you have to connect a USB cable port to led tv
में Put another port of the USB cable into your phone
♦ Now your mobile will start showing all data like video and photo led tv.
♦ From this, you can see your mobile video and photo led tv.
5. By Bluetooth
You get this feature also in smart led tv. It works the same way as we do data transfer from mobile to mobile. Use Bluetooth to connect to android mobile led tv
♦ First, turn on your mobile’s Bluetooth
♦ Then switch to led tv setting for the Bluetooth scan in the led tv
♦ Now pair your mobile’s Bluetooth device now has been connected to your android mobile led tv.


At SC16, SCinet will strive to make the best wireless network resources available for you throughout the conference. Each year we are making improvements to the service, working in partnership with the city of Salt Lake City and the convention center IT staff.
All of SC’s networking resources – including nearly a terabit of wired bandwidth – are provided through SCinet. This year, SCinet will deploy IEEE 802.11a, 802.11g and 802.11n wireless networks that will enable basic access to the Internet at no charge to attendees. The wireless network will extend to meeting rooms, exhibit halls, and all common areas of the center occupied by SC16.
SC attendees are among the most connected conference-goers around the world and put even the most sophisticated wireless networks to the test. We apologize in advance if you experience any connection difficulties in certain areas due to reduced signal strength, network congestion, or other issue. SCinet actively monitors the health of the wireless networks and will make every effort to provide stable and reliable services.
Additional Wireless Policy Details
In order to provide the most robust wireless service possible, SCinet has some special policies in place. SCinet must control the entire 2.4GHz and 5.2GHz ISM bands (2.412GHz to 2.462GHz and 5.15GHz to 5.35GHz) within the convention center. This has important implications for exhibitors and attendees:
- Exhibitors and attendees may not operate their own IEEE 802.11 (a,b,g,n or other standard) wireless Ethernet access points anywhere within the convention center, including within their own booth. This includes personal hotspots, myfi, or other WiFi to cellular bridges.
- Wireless clients may not operate in ad-hoc or peer-to-peer mode due to the potential for interference with other wireless clients.
- Exhibitors and attendees may not operate 2.4GHz or 5.2GHz cordless phones or microphones, wireless video or security cameras, or any other equipment transmitting in the 2.4GHz or 5.2GHz spectrum.
SCinet wants everyone to have a successful, pleasant experience at SC16. This should include the ability to sit down with your wireless-equipped laptop, tablet or smart-phone to check e-mail or surf the web from anywhere in the wireless coverage areas. Please help us achieve this goal by not operating equipment that will interfere with other users.
The SC16 Conference reserves the right to deny or remove access to any system in violation of the SCinet acceptable usage policy and to anyone who uses multicast applications or harms the network in any way, intended or unintended, via computer virus, excessive bandwidth consumption or similar misuse.
If you have any questions during the conference, please contact us at firstname.lastname@example.org


Using Mobile Phones – Overseas
If you decide to take your phone with you overseas you must be aware of a few things so you do not end up with a costly phone bill when you come home.
Before you travel contact your mobile phone company to check whether your account is set up to use overseas.
When you arrive in a foreign country your phone will automatically switch to international roaming (unless you de-activate this with the phone company). Roaming is when your phone uses another network while still being billed by your existing provider. When you are roaming on another network your number remains the same and the temporary mobile phone company will bill your usual mobile phone company for calls, voice messages and text you make. These will be billed at the international call and data rate your company uses, even when receiving a call. Data usage is a big cause of exorbitant fees when overseas. Some apps you may have installed on your phone continually run in the background, particularly anything connected to a GPS system, therefore using and incurring data usage fees.
There are several ways you can minimise your spending on calls while away, but still have access to your mobile phone, if needed.
Firstly, and this is the most important one, as soon as you hop on your first international flight, switch your phone to flight mode and turn off “cellular data” in your settings. This will restrict all data usage unless you’re connected to Wi-Fi. You can still make and receive phone calls if you wish if this is turned off. I like to ask people to text me if necessary while I am away as it is cheaper. For verbal conversations use Skype or Viber. These work well when there is a strong Wi-Fi signal.
Tip: Turn your phone to “Flight mode” when using these methods to guarantee usage is only via Wi-Fi.
Secondly, you can purchase an International Sim card prior to leaving Australia. Australia Post always offers good options. The cheapest option generally is to pick up a local Sim on arrival in your foreign country as this will give you access to local rates for all calls, data and text, but you will have a different number. If you do purchase a local Sim card always check before you go if your phone is unlocked. Many of the latest phones are now unlocked but it still is worth checking to see if your phone is locked to a network, especially If your mobile phone is on a plan.


Without using any tools! Wiring is very easy: Strip 9 -- 10 mm/0.37 inches from the desired conductor, open the clamping unit via the integrated lever, and insert the conductor.
In addition to standard applications in building installations, these connectors can also be fixed in position for use with mounting carriers, e.g. in distribution boxes.
- Fast and easy to use
- The right terminal block and connector for every application
- Minimal space requirements enable high wiring density
- Clearly organized wiring in control cabinets and junction boxes
- Maintenance-free installation
- Permanent, secure connections
- Package Weight: 0.4 kg
- Package Size: 15 x 8 x 4 cm


This past summer 2018, on one of my family’s ocean fishing trips I took along one of my Baofeng’s UV-5R radios. One reason was to have another means of communication, but the main purpose was to test propagation of VHF/UHF over water and to see how far away I could get into a specific repeater.
We departed from the mouth of the Salmon River, just a few miles north of Lincoln City on the Oregon Coast. We were making a run for Tuna so I knew we’d be going out pretty fair and this would give me an opportunity to test just how far out I could be and get into one of my favorite repeaters.
The repeater, there are two actually, is located on South Saddle Mountain. ARRG, a local repeater group in the Portland area, operates and maintains a VHF/UHF linked pair of repeaters at S. Saddle Mt. The VHF frequency is 147.320 MHz and the UHF frequency is 442.325 MHz.
On the way to our fishing spot I was able to do a little testing to see if I could get into the repeater system. Within 5 miles of shore I was not able to bring up either one of the repeaters. Once we got out to about 5 miles, I was able to bring up both the VHF and UHF side of the repeater system. Being that it was zero-dark-thirty in the morning, no one was on the system to get a signal report back. Due to the ocean conditions I was not able to do any further testing while we continued to our fishing spot.
Once we reached our final fishing location, we had a little down time between catching fish as one usually does. During one of the lulls in the fishing, I grabbed the radio to test again. At this point we were located 25 miles pretty much due West from the mouth of the Salmon River and about 70 miles from the repeater site.
Being so far out, I tried the VHF repeater thinking it would have the best chance of hearing me. I keyed up the radio, threw out my callsign and unkeyed…nothing back from the repeater and no return call. I tried a few more times just to make sure, still nothing. I wasn’t surprised given the distance, the fact I was running 5-watts through an HT with an 18-inch whip antenna.
I changed channels to the UHF side of the repeater system and tried again. Much to my surprise, when I unkeyed I heard the repeater come back to me. Not only was I able to hear the repeater comeback, Marc W7PM, located in Beaverton Oregon at the time, was listening and he came back to me. We held a quick QSO consisting primarily of location and signal report. While there was noise on the signal, we both were perfectly readable to one another, one might give it a 5 by 7 signal report.
For further reading on the topic of Radio wave propagation at VHF/UHF, I would recommend reading – The propagation of VHF and UHF radio waves over sea paths by Chow Yen Desmond Sim. To download the pdf document click on 2002SimCYDPhD.
Moreover, there is relatively very little published on equivalent propagation over the sea for both VHF/UHF when the direct path is obstructed by the sea surface. The propagation path over sea is very different from over land, as the atmospheric conditions over the sea are the dominant influence of the propagation characteristics.
HF/UHF and microwave signals can travel distances beyond the horizon under certain atmospheric conditions. Depending on the state of condition in the atmosphere, radio propagation between the transmitter and the receiver may occur by the mechanisms of scattering, reflection, refraction, diffraction and tropospheric ducting. It is generally agreed that the radio-meteorological situation in the coastal areas can produce complicated structures due to the interaction between the sea and the land.
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"SELVEDAS" - high performance computing and data services in a cloud infrastructure.
«SELVEDAS» - Services for Large Volume Experiment-Data Analysis utilising Supercomputing and Cloud technologies.
About the project
"SELVEDAS" has emerged from a collaboration between the Paul Scherrer Institute (PSI) and the Swiss National Supercomputing Centre (CSCS). "SELVEDAS" demonstrates the feasibility and benefits of on-demand high-performance computing and data services - in near real-time - in a cloud infrastructure. The joint project is a model for further scalable data infrastructures and solutions under "Alps", the new software-defined supercomputer infrastructure being developed at CSCS.


With WERMA’s access control system, you can easily let someone standing in front of the entrance know whether access can currently be granted. This ensures that there are not too many people in the shop or practice at the same time and that the safety distance can be maintained.
With this version, the signal tower is supplied with electricity via a mains adapter (230 V). This means that the signal tower will have to be close to a power socket.
Components of the SignalSET Wireless (649.191.01)
With this version, the signal tower is supplied with electricity via a commercially available USB power bank (recommendation: 20,000 mAh for 20 hours of operation).
Components of the SignalSET Wireless with USB (649.191.02)
The access controls are ideal for supermarkets and smaller retail traders such as bakers or butcher’s shops, but also for petrol stations, chemists and hospitals. For other types of application, we will be happy to put together an individual set for you.
21 Toh Guan Road East, #09-07 Toh Guan Centre,
T: +65-6686 0878
F: +65-6686 0085


Mega music streaming services like Spotify and Pandora may be all the rage nowadays, but their services are targeted strictly at those with cool smartphones and data plans. However there are still millions of people out there who use plain old regular cell phones, without data or other fancy features, so it’s good to hear about innovative mobile streaming techs which are trying to cater to those living on the other side of the digital divide.
ZenoRadio is one such service. The company offers streaming radio stations which are accessible via a phone call, no expensive data plans needed. Of course the listener uses up their call minutes, but increasingly there are call plans which give unlimited local calls per month, and for these users this radio service is ideal.
Anybody can set up their own radio station for free, and once they sign up, their radio stream is allocated a free telephone number which subscribers can call to listen in. It’s exactly like a standard web streaming service, except you dial a phone number instead of using an app or data connection via the web. The company has initially targeted niche market segments (e.g. Christian Radio) and immigrant radio which caters to the millions of displaced souls who want to stay in touch with their home country in the native language.
It’s up to the station to sort out their own streaming system (but if you’re clever you’ll be able to find free open source options like Airtime and Icecast, which will give you everything you need) and once they’re set up, all they have to do is supply their streaming ULR to ZenoRadio, grab and circulate the telephone number and they’re up and running.
The service is US only at the moment, and there is a free Android app which makes it easy for users to manage a number of their favorite stations. We’re fascinated by the idea of retro style dial-up radio, because it makes absolute sense for a target demographic who probably can’t afford expensive smart handsets with 3G connections and all the frills. Definitely an idea to watch.


Facebook users in Poland, Bolivia, Colombia and Lithuania are able to test a new ‘Unsend’ Messenger feature. This has been made available on both iOs and Android applications.
The development of this feature came after users realised that messages sent from Facebook executives were able to be removed, so the public questioned why they could have the desired feature, but we couldn’t.
After months of changing the back-end functionality of the app, it has now been rolled out for testing in selected geographical locations.
With this new feature, users are able to remove and delete messages within 10 minutes of sending, so you are able to correct a mistake.
According to TechCrunch:
“Facebook settled on the ability to let you remove any kind of message – including text, group chats, photos, videos, links, and more – within ten minutes of sending. You can still delete any message on just your side of the conversation, but only messages you sent can be removed from their recipients. You can’t delete from someone else what they sent you.”
When deleting a message, two options will show “Remove for Everyone” or “Remove for you”. We’ve always been able to delete the embarrassing messages from our end, but now if you’re quick enough, you can delete them before anyone reads them!


Energy drives the Internet
Did you know that every Google search request produces 0,2g of CO2? Not much, you might think, but the whole Internet world produces about 11 billion Google searches each month. And that makes it a lot, 2,200 tons, to be precise! Google lately said that all their worldwide data centers need about 1/10,000 of the overall world’s energy consumption. Well, just a small piece, but that’s just one single company! The next fact brings me to the point: Scientists believe that the Internet by the year 2030 will consumption the amount of energy, that the whole world uses today.
That’s why I want to talk about “Green IT”. Although, IT will never be “green”. It will always need and waste energy. But, what we can do is, to reduce the amount of power consumption to a reconcilable level. I work for a data center service provider; I have to care about that. When you handle thousands of servers, you better think of green IT.
More than energy saving
Well, green IT is more than energy saving. It’s about chemical substances; it’s about paper waste and other things. But the energy topic is the most important one. In a data center you don’t switch off servers. You might switch off the lights, but that doesn’t matter. Servers in a data center run 7 days, 24 hours. Thus, a data center uses energy like thousands of private households do. And that’s the point to start with.
Cloud computing saves energy
A typical server needs power, but is only used at 10-25% of its capacity. That is, where virtualization and Computing clouds can help. This technology puts a couple of logical servers onto a physical machine and by that sees to it that this machine is used more efficiently. The same amount of logical servers runs on less physical machines. And the need of less physical servers saves energy.
Low power CPUs in standard servers
The next point is the server itself. The industry developed CPUs with much less power requirements at the same performance level. These CPUs are mainly produced for mobile devices, notebooks and high density electronics, where there is only little battery power available or the produced heat is critical. However, we can use these CPUs in standard servers as well. And by that, we save energy.
Central power supplies
Each server typically has a separate power supply. In data centers servers usually have more of them than needed, due to availability reasons. Unfortunately, each power supply wastes energy while it converts the power to a level the machine needs. In a data center, a way to reduce these power conversion losses is to implement central power supplies. Instead of using thousands of little power supplies you can setup a few huge central ones. In that case you don’t drive your servers with standard AC power, but with already converted DC power. The huge central power supplies will produce much less conversion losses than the thousands small ones. Unfortunately, there are not very many compatible servers available in the market, which can work with such central conversion. But there is a huge potential for energy savings at data centers with this technology.
Some providers and initiatives are working on that issue to push the industry providing appropriate servers. E.g., Microsoft, Facebook and others uses special servers customized to their individual needs. Another example is the Open Compute project (http://opencompute.org), which also requests new server designs from the industry.
Well, the whole topic is about a lot more than said so far. But for now, let’s stop here. Wait for my sequel at one of the next blog entries.


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When Seaboard began operations with DC-4s in 1947, it was necessary to carry navigators and radio operators on trans-oceanic flights. The radio operators communicated with distant ground stations via Morse code. In order to increase radio range, the DC‑4s were was equipped with a trailing wire antenna about 50 ft long which had a weight on the end. It could be let out by the operator and reeled in before landing. In the early 1950s, HF (high-frequency) radio sets that enabled the pilots to conduct voice communications with distant ground stations became available and the radio operators were eliminated from Seaboard flight crews. The early HF radios required the crew to install crystals for the specific frequencies to be used. When the first CL‑44 was delivered in 1960, it came equipped with Collins Radio 618T‑2 HF transceivers. Seaboard was the first airline to operate these units which permitted selecting any of 28,000 frequencies from the control head without the need to change crystals.
In the early days of Seaboard, a navigator reporting for duty would study the weather charts for the scheduled flight, plot the courses to be flown, and calculate the estimated time for each segment of the flight. This information was written down as the flight plan. Over the ocean, the sextant was the primary tool available to navigators. It was used with a accurate timepiece, data from three volumes of sight-reduction tables and an Air Almanac. The sextant was used to measure the altitude of celestial objects above the horizon. DC-4s had a clear astrodome over the cockpit in which the navigator stood on a small stool and used a bubble sextant to take his measurements. On pressurized aircraft, starting with the Lockheed Constellations, navigators used Kollsman D‑1 periscopic sextants that were inserted into an opening in the ceiling of the cockpit. It was tricky business in any sort of turbulence and impossible in or under cloud cover, a common occurrence in unpressurized DC‑4s which usually flew at 8,000 to 9,000 feet. The measurements taken by the navigator, data from the Air Almanac and from three volumes of sight-reduction tables about the celestial objects observed, together with accurate time readings, were used to determine position (latitude and longitude). Click on the image above to see the full chart. The navigator could thereby monitor the progress of the flight, issue course corrections to the pilots as necessary, and plot new courses if necessary or desired.
When the navigator wanted the pilots to change course, he would write the information on a slip from a special notepad and give it to the pilots or attach it to a convenient location with a bit of tape; e.g. the rudder trim knob in the DC-8. In addition to the new heading, the note contained the PNR (Point of No Return), the point in the flight where there was not enough fuel remaining to return to a suitable airport ; and the ETP (Equal Time Point), the point where it would take the same time to return to a suitable airport as it would to continue. The ETP was calculated using the speed with one engine out.
During its participation in the Pacific Airlift for the Korean Conflict, Seaboard developed an advanced form of pressure-pattern flying. A ground navigator studied the weather charts and selected a route that would give the fastest flight time and thereby minimum fuel consumption. During the flight, he would send updated wind information to the flight navigator who used a transparent overlay developed by Seaboard. A separate overlay for each leg showed several possible routes for each leg on either side of the great-circle route that gave the shortest distance. The overlay also listed the distance for each such route and the wind component necessary to compensate for the additional distance. The flight navigator would place the overlay on top of a weather map with the latest wind information and adjust the route to minimize time. In the 1960s, the flight plans were generated by a computer but the navigators' in-flight duties remained otherwise unchanged.
During World War II, LORAN (long-range navigation) was developed by the U.S. Government. It used ground-based radio systems to transmit signals processed by receivers carried by ships and aircraft. In the 1950s, military-surplus LORAN systems became available and Seaboard installed surplus RCA AN/APN‑9 LORAN units at the navigator's station in DC‑4s. EDO 345 LORAN systems were installed at the navigators stations in CL-44 and DC-8-55F aircraft. The last LORAN model installed in Seaboard aircraft was the EDO 600T. An EDO LORAN indicator can be seen at the bottom of the navigator's instrument panel in this photo showing the navigator's station at the left rear of the cockpit in N8632, a DC‑8‑63CF. The EDO receiver can be seen behind the transparent window of the radio rack. The system of LORAN ground stations was taken over by the U.S. Coast Guard in 1958.
During the 1960s, international airlines, including Seaboard, starting testing various electronic systems to see if they could replace navigators. Seaboard tested Doppler Radar navigation systems made by both Collins Radio and by Bendix Avionics. One such system tested by Seaboard was the Bendix Avionics DRA-12 / CPA-24 Doppler Radar navigation system. It used a radar altimeter to measure ground speed and drift angle, and it got heading information from the aircraft's fluxgate compass system. The system's computer used that information to calculate distance and direction traveled. The system lacked flexibility in that the crew had to know the distance and course to the next waypoint. One problem was that the Doppler radar could be stymied by smooth water and fail to provide current groundspeed and drift information. In addition, the cooling in the DC‑8 radio racks was insufficient to keep the systems' electronic units from overheating and the Bendix system was rejected. The groundspeed/drift indicator was retained, providing useful information to navigators and pilots. The Bendix system was used successfully by some airlines, including TWA from 1962 in their Boeing 707s.
After rejecting the Doppler systems, Seaboard tested the Decca Omnitrac system, as seen in this 1967 magazine ad. Decca, a British company, used its own ground-based radio transmitters, similar to the LORAN system. The cockpit units included moving map displays that used paper maps printed on long rolls. The maps scrolled back and forth and a cursor moved across the roll to indicate the aircraft's position. It was extremely unreliable and ultimately rejected by Seaboard.
In the late 1960s airlines started testing pilot-operated Inertial Navigation Systems (INS), a technology developed for rockets. Seaboard tested INS systems manufactured by Litton Aero Products. They proved to be reliable and accurate and were the first INS units certified by the FAA. They also provided more flexibility then the other systems tried. The route could be changed at any time with no calculation required on the part of the pilots. By the end of 1970, Seaboard had installed two Litton LTN‑51 systems in each of its aircraft and Seaboard's navigators were gone. Seaboard was the first airline in the world to equip its entire fleet with INS equipment.


MQTT Sparkplug B¶
The foglamp-south-mqtt-sparkplug plugin implements the Sparkplug B payload format with an MQTT (Message Queue Telemetry Transport) transport. The plugin will subscribe to a configured topic and will process the Sparkplug B payloads, creating FogLAMP assets form those payloads. Sparkplug is an open source software specification of a payload format and set of conventions for transporting sensor data using MQTT as the transport mechanism.
Sparkplug is bi-directional, however this plugin will only read data from the Sparkplug device.
To create a south service with the MQTT Sparkplug B plugin
- Click on South in the left hand menu bar
- Select mqtt_sparkplug from the plugin list
- Name your service and click Next
- Configure the plugin
- Asset Name: The asset name which will be used for all data read.
- MQTT Host: The MQTT host to connect to, this is the host that is running the MQTT broker.
- MQTT Port: The MQTT port, this is the port the MQTT broker uses for unencrypted traffic, usually 1883 unless modified.
- Username: The user name to be used when authenticating with the MQTT subsystem.
- Password: The password to use when authenticating with the MQTT subsystem.
- Topic: The MQTT topic to which the plugin will subscribe.
- Click Next
- Enable the service and click on Done


Amiga® RKM Libraries: 22 Exec Signals
Tasks often need to coordinate with other concurrent system activities
(like other tasks and interrupts). This coordination is handled by Exec
through the synchronized exchange of specific event indicators called
This is the primary mechanism responsible for all intertask communication
and synchronization on the Amiga. This signal mechanism operates at a low
level and is designed for high performance. Signals are used extensively
by the Exec message system as a way to indicate the arrival of an
inter-task message. The message system is described in more detail in the
"Exec Messages and Ports" chapter.
Not for Beginners.
This chapter concentrates on details about signals that most
applications do not need to understand for general Amiga programming.
For a general overview of signals, see the "Introduction to Exec"
chapter of this manual.
The Signal System Function Reference
22 Exec Signals / The Signal System
The signal system is designed to support independent simultaneous events,
so several signals can occur at the same time. Each task has 32
independent signals, 16 of which are pre-allocated for use by the
operating system. The signals in use by a particular task are represented
as bits in a 32-bit field in its Task structure (<exec/tasks.h>). Two
other 32-bit fields in the Task structure indicate which signals the task
is waiting for, and which signals have been received.
Signals are task relative. A task can only allocate its own signals, and
may only wait on its own signals. In addition, a task may assign its own
significance to a particular signal. Signals are not broadcast to all
tasks; they are directed only to individual tasks. A signal has meaning to
the task that defined it and to those tasks that have been informed of its
For example, signal bit 12 may indicate a timeout event to one task, but
to another task it may indicate a message arrival event. You can never
wait on a signal that you did not directly or indirectly allocate
yourself, and any other task that wishes to signal you must use a signal
that you allocated.
Signal Allocation Waiting for a Signal Generating a Signal
22 / The Signal System / Signal Allocation
As mentioned above, a task assigns its own meaning to a particular signal.
Because certain system libraries may occasionally require the use of a
signal, there is a convention for signal allocation. It is unwise ever to
make assumptions about which signals are actually in use.
Before a signal can be used, it must be allocated with the AllocSignal()
function. When a signal is no longer needed, it should be freed for reuse
BYTE AllocSignal( LONG signalNum );
VOID FreeSignal( LONG signalNum );
AllocSignal() marks a signal as being in use and prevents the accidental
use of the same signal for more than one event. You may ask for either a
specific signal number, or more commonly, you would pass -1 to request the
next available signal. The state of the newly allocated signal is cleared
(ready for use). Generally it is best to let the system assign you the
next free signal. Of the 32 available signals, the lower 16 are reserved
for system use. This leaves the upper 16 signals free for application
programs to allocate. Other subsystems that you may call depend on
The following C example asks for the next free signal to be allocated for
if (-1 == (signal = AllocSignal(-1)))
printf("no signal bits available\n");
printf("allocated signal number %ld\n", signal);
/* Other code could go here */
The value returned by AllocSignal() is a signal bit number. This value
cannot be used directly in calls to signal-related functions without first
being converted to a mask:
mask = 1L << signal;
It is important to realize that signal bit allocation is relevant only to
the running task. You cannot allocate a signal from another task. Note
that functions which create a signal MsgPort will allocate a signal from
the task that calls the function. Such functions include OpenWindow(),
CreatePort(), and CreateMsgPort(). For this reason, only the creating
task may Wait() (directly or indirectly) on the MsgPort's signal.
Functions which call Wait() include DoIO(), WaitIO() and WaitPort().
22 / The Signal System / Waiting for a Signal
Signals are most often used to wake up a task upon the occurrence of some
external event. Applications call the Exec Wait() function, directly or
indirectly, in order to enter a wait state until some external event
triggers a signal which awakens the task.
Though signals are usually not used to interrupt an executing task, they
can be used this way. Task exceptions, described in the "Exec Tasks"
chapter, allow signals to act as a task-local interrupt.
The Wait() function specifies the set of signals that will wake up the
task and then puts the task to sleep (into the waiting state).
ULONG Wait( ULONG signalSet );
Any one signal or any combination of signals from this set are sufficient
to awaken the task. Wait() returns a mask indicating which signals
satisfied the Wait() call. Note that when signals are used in conjunction
with a message port, a set signal bit does not necessarily mean that there
is a message at the message port. See the "Exec Messages and Ports"
chapter for details about proper handling of messages.
Because tasks (and interrupts) normally execute asynchronously, it is
often possible to receive a particular signal before a task actually
Wait()s for it. In such cases the Wait() will be immediately satisfied,
and the task will not be put to sleep.
The Wait() function implicitly clears those signal bits that satisfied the
wait condition. This effectively resets those signals for reuse.
However, keep in mind that a task might get more signals while it is still
processing the previous signal. If the same signal is received multiple
times and the signal bit is not cleared between them, some signals will go
Be aware that using Wait() will break a Forbid() or Disable() state.
Wait() cannot be used in supervisor mode or within interrupts.
A task may Wait() for a combination of signal bits and will wake up when
any of the signals occur. Wait() returns a signal mask specifying which
signal or signals were received. Usually the program must check the
returned mask for each signal it was waiting on and take the appropriate
action for each that occurred. The order in which these bits are checked
is often important.
Here is a hypothetical example of a process that is using the console and
timer devices, and is waiting for a message from either device and a
possible break character issued by the user:
consoleSignal = 1L << ConsolePort->mp_SigBit;
timerSignal = 1L << TimerPort->mp_SigBit;
userSignal = SIGBREAKF_CTRL_C; /* Defined in */
signals = Wait(consoleSignal | timerSignal | userSignal);
if (signals & consoleSignal)
if (signals & timeOutSignal)
if (signals & userSignal)
printf("User Ctrl-C Abort\n");
This code will put the task to sleep waiting for a new character, or the
expiration of a time period, or a Ctrl-C break character issued by the
user. Notice that this code checks for an incoming character signal
before checking for a timeout. Although a program can check for the
occurrence of a particular event by checking whether its signal has
occurred, this may lead to busy wait polling. Such polling is wasteful of
the processor and is usually harmful to the proper function of the Amiga
system. However, if a program needs to do constant processing and also
check signals (a compiler for example) SetSignal(0,0) can be used to get a
copy of your task's current signals.
ULONG SetSignal( ULONG newSignals, ULONG signalSet );
SetSignal() can also be used to set or clear the state of the signals.
Implementing this can be dangerous and should generally not be done. The
following fragment illustrates a possible use of SetSignal().
signals = SetSignal(0,0); /* Get current state of signals */
if (signals & SIGBREAKF_CTRL_C) /* Check for Ctrl-C. */
printf("Break\n"); /* Ctrl-C signal has been set. */
SetSignal(0, SIGBREAKF_CTRL_C) /* Clear Ctrl-C signal. */
22 / The Signal System / Generating a Signal
Signals may be generated from both tasks and system interrupts with the
VOID Signal( struct Task *task, ULONG signalSet );
For example Signal(tc,mask) would signal the task with the specified mask
signals. More than one signal can be specified in the mask. The
following example code illustrates Wait() and Signal().
22 Exec Signals / Function Reference
The following chart gives a brief description of the Exec functions that
control task signalling. See the Amiga ROM Kernel Reference Manual:
Includes and Autodocs for details about each call.
Table 22-1: Exec Signal Functions
| Exec Signal |
| Function Description |
| AllocSignal() Allocate a signal bit. |
| FreeSignal() Free a signal bit allocated with AllocSignal(). |
| SetSignal() Query or set the state of the signals for the current |
| task. |
| Signal() Signal a task by setting signal bits in its Task |
| structure. |
| Wait() Wait for one or more signals from other tasks or |
| interrupts. |
Converted on 22 Apr 2000 with RexxDoesAmigaGuide2HTML 2.1 by Michael Ranner.


Chinese company Vido, after enjoying the success of W10 tablet is going to launch W11 tablet that will feature 10.1 inch display, built in 3G, GPS and would run Windows 8.1 operating system.
Vido W11 Specs
Display: 10.1-inch IPS matrix with a resolution of 1280 x 800 pixels,
Processor: 4-core Intel Atom Z3770,
RAM: 2 GB DDR3L,
NAND Memory: 32/64 GB + microSD card slot
Camera: Front – 2 megapixel, Home – 2 megapixel,
Communication: wireless module working in a standard N, Bluetooth 4.0, GPS, 3G, HDMI, 2x USB 2.0, 1x USB 3.0,
System: Windows 8.1
Battery: 8000 mAh.
Vido W10 Review
Last month, we posted review of W10 and we were fairly impressed with it. The W11 has same innards as the W10 but packs built in 3G and an additional USB 2.0 port. Other than that, it offers similar performance since both pack Atom Z3770 quad core processor backed by 4 gigabytes of RAM.
February 21, 2014


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Place calls on hold and pick up when you’re ready.
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Keep your customers cool, calm and collected while they’re on holding with your choice of music.
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