USB2.0 Digital DVB-T TV Tuner Recorder Receiver Stick RTL-SDR+DAB+FM
USB2.0 Digital DVB-T TV Tuner Recorder Receiver Stick RTL-SDR+DAB+FM Feature: 1) Digital terrestrial video and radio programs recording . 2) Real time digital video recording . 3) Still image capture . 4) Pip (picture in picture). 5) One touch channel euto-scan at 6/7/8 MHz. 6) On-fly decode software technique. 7) Multi-language in stallation and application program. 8) Full DVB-T bandwidth reception . 9) Time-shifting. 10) Digital TV recording and playback as DVD quality. 11) Support Microsoft DAB drivers. 12) Remote control. Specification : 1) Interface :USB 2.0 Standard 2) Input : 75 Ohm IEC(Din) Connector 3) Output :A type USB male connect 4) Receiving frequency: FM radio: 87.5~108 MHZ 5) DAB radio: L-Band-1452960~1490624 KHZ VHF174928~ 239200 KHZ 6) TV system: Full DVB-T and DAB compliant 7) Bandwidth: 6/7/8 MHZ auto select for DVB-T 8) Power supply: USB bus 9) Consumed power: 1.5W Package Included: 1 x Software CD (Trial Version) 1 x USB DVB-T TV Tuner Recorder 1 x Antenna 1 x Remote Control NOTE: If you want t listen DAB or DAB+digital radio, you must make sure you have DAB or DAB+signal,and the results you received depends on the signal strength.


2021 International Conference on Electronic Communication, Computer Science and Technology （ECCST2021）will be held in Nanchang, China on December 03-05, 2021. It is co-hosted by Jiangxi Science & Technology Normal University. It mainly focuses on Electronics and communications, networking, artificial intelligence and computers and other research fields to discuss. This conference will provide a valuable opportunity for researchers and industry experts to exchange opinions face-to-face. We sincerely invite you to participate in ECCST 2021 and look forward to seeing you in Nanchang, China!


Service solutions for batteries and energy storage systems for mobile radio stations
In addition to the power supply, stable mobile phone networks are indispensable for everyday life in this day and age. Mobile radio stations enable area-wide stable radio signals, an important component to avoid failures is the battery. It serves as a back-up system and ensures an adequate power supply for the system in an emergency.
Regular testing of such systems is essential for maintaining functionality and for use in an emergency. We would be pleased to advise you and show you which services are necessary to protect your transmission equipment.


3.5" CCTV Security Test Monitor with Tdr Test Function (CT2602T)
|FOB Unit Price:||US $200 US $190|
|Purchase Qty. (Pieces)||FOB Unit Price|
|Production Capacity:||100000 PCS Per Year|
|Transport Package:||Gift Box|
|Payment Terms:||L/C, T/T, Western Union, Paypal, Money Gram, Cash|
- Model NO.: CT2602T
- Display: 3.5 Inch TFT-LCD ,480(RGB)X 320
- Power Output: DC12V1a Power for Camera
- Cable Scan: Search The Cable by The Audio Signal
- Size: 194mm X 112mm X 48mm
- Trademark: Chinasky
- Origin: China
- Signal Mode: NTSC/PAL (Auto Adapt)
- PTZ Controller: Support RS232 and RS485
- 10 X Zoom of Image: 10X Zoom Image Display and Video out
- Tdr Tester: Breakpoint and Short Circuit Measurement
- Weight: 540g
- Specification: CE, RoHS
- HS Code: 903180
3.5 inch TFT-LCD, LCD Brightness/Contrast/Color Saturation are adjustable, NTSC/PAL auto display, Video signal testing, Video signal level test, NTSC/PAL Enhanced Color bar generator, PTZ controller, UTP cable tester, PTZ data analyst, PTZ address scanning, DC12V 1A power output for camera, Audio testing, POE power supply testing, PING testing, IP address scan, Video snapshot, Video record, Image magnification, Port flicker, LED lamp, Cable scan function, Lithium Ion Polymer Battery support 11 hours working time. support more than 30 IP camera image test (Hikvision, Dahua, Honeywell, Samsung etc).
-Find out the other end of the cable in security maintenance and network engineering
-CCTV system installation and maintenance
-Dome camera and All in one camera testing
-The CCTV transmitting channel testing
Features of the CCTV Security Tester:
-3.5 inch full-view TFT-LCD, 480(RGB)x320
-low consumption, work for 11 hours
-OSD menu, English, Chinese and other languages optional
-LCD screen brightness/contrast/color Saturation adjustable
-Cable scan, send the specific signal, easy to find the connected cable.
-Automatically identify and adapt the video mode of NTSC and PAL
-Enhanced colorbar generator, by receiving the video color bar to test the video channel whether transmit normally
-Moveable Micro SD(4GB micro SD included)
-LED Lamp, easy to operate at night
-User-defined shortcut keys(F1 and F2)
-10x zoom,video image can be magnified to view the details, easy to use
-Snapshot and save the current image as JPG file in the SD card
-PING testing,test IP camera or other network devices' ethernet port whether work normally, and the IP address whether is right
-IP address scan, quickly search the IP address for the connected IP camera and other network devices
-POE voltage measurement, test the POE switch's voltage to IP cameras, wireless AP device and other PD devices
-Device Port flicker, easy to find the connected POE switch port by sending special signals, the connected POE port will flicker at special frequency
-Link monitor; check the setting IP address whether occupied
-PTZ address scan, search up the ID of PTZ camera.
-Network cable and Telephone cable testing, display the sequence of connection and the No
of the LAN cable
-Multi-protocol. Supports more than thirty PTZ protocols. Such as PELCO-P, PELCO-D,
- Support RS232/RS485/RS422, rate 600 ~ 115200bps adjustable
-Lithium Ion Polymer Battery. The device employs advanced power control and protection circuit
-Display the data and image in on the screen at the same time
-Easy for use that the train is almost unnecessary
Function of the CCTV Security Tester :
1 . Video signal testing
The new cctv tester, built-in high definition 3.5"LCD-TFT 480(RGB)x320
full-view display screen, easy and directly displays the camera image quality
LCD screen brightness/Contrast/Color Saturation adjustable. Suitable for field construction and maintenance work
2. Video signal level test
Test video signal strength attenuation, longer video signal cable will cause the image to be dim, and reduce the image dynamic range, video signal is too strong, it will cause the virtual shadow, and reduce the sharpness of the image.
It also can real-display the video level value, if out of range, notices will be display in the screen.
3. PTZ controller
Display the input video images. Pan/tilt the P/T unit and zoom in/ out the image. Setup the controlling parameters like protocol, communication port, baud rate, PTZ ID, pan/tilt speed; set and call preset position.
4. Enhanced Color bar generator
Video Generating, the PAL/NTSC multi-system color bar video generator (Eight-system switchable, transmit/receive eight-system colorful imagines). By receiving the video color bar to test the video channel whether transmit normally. And judge whether the color is different, because of the transmission loss or interference, it suitable for Video transmission of the field tests, such as optical video transmitter and receiver, video cable etc.
The new function color bar can test the image whether shift.
The color bar (red, green, blue, white, black) test the monitor whether have white or black dot etc.
5. DC12V 1A output power
Power the camera with DC12V (1A) power output from the tester. It is helpful for demo and testing when the power supply is not available.
6. Audio testing
Test the audio input from pickup devices. Connect the tester and pickup device with the audio cable.
7. Cable tester
Test LAN cable or telephone cable.
Connect LAN cable or telephone cable with the CCTV tester and cable tester. And then the connecting status, cable type and the sequence of wires will be displayed, as well as the serial number of the cable tester kit.
8. PTZ controller
Search the Control protocol code from Multifunction keyboard or DVR by RS485 /RS232 interface, test the PTZ control command data whether received anomaly and RS485/RS232 data transmission.
Screen displays 16 hexadecimal codes such as
PELCO-P:A0 00(Add) xx xxxxxx AF xx
PELCO-D:FF 01(Add)xx xxxxxxxx
9. PTZ address scanning
Search up the ID of PTZ camera. Help the engineer search the speed dome address quickly.
10. Image magnification(10xZoom)
Set image 10x zoom, can view and display the details by 1x,2x,3x,4x,5x,6x - 10X zoom in the monitor and tester.
11. Video snapshot
Capture the video image and save the current video frames as JPEG file
12. Video record
Record and save the current video in the SD card
13. Video playback
Video image and record files are saved in the SD card. Storage file directory can be created according to the date
14. Port flicker
The tester will send special signals to make the connected POE port flicker at special frequency, which will enable the installers to easily and quickly find the connected ethernet cable. This function can prevent mistakenly insertion or disconnection non-corresponding cable to artificially interrupt network connection.
15. IP address scan
In digital IP surveillance applications, if IP camera's IP address is not clear or forgotten; the device cannot be used .
IP address scan can quickly search the connected IP camera or other network device's IP address.
16. Link monitor
To add an IP camera or other network device to the current network group, the new IP address must not be occupied, otherwise it will cause IP conflicts and stop the equipment normal working. Link monitor can check if the new setting IP address is occupied.
17. PING test
PING is the most conventional network debugging tools; It is used for testing if the connected IP camera or other network equipment's ethernet port is working normally and the IP address is correct.
It can test the PoE voltage when the POE switch is supplying the POE power to IP camera. It can clearly display the power+ and power- on the ethernet cable pins, each cable pin's voltage and the failure connection of cable pin series numbers.
19. LED lamp
It is useful for the Engineer to install and maintain security system at night. LED On/Off pressing button, easy operation.
20. F1,F2 User-defined shortcut keys
The user-defined shortcut key is designed for improving the efficiency for the engineer, anytime press, easy to operate.
22. Cable scan
Send the specific signal, easy to find the connected cable.
23. TDR Break-point and short-circuit measurement (optional function refer to the last page)
New function: TDR cable testing, accurately measure BNC cable, network cable, control cable break-point and short-circuits location. It improves working efficiency.
|Model||CCTV Security Test monitor CT2602 ( 6th generation)|
|Signal mode||NTSC/PAL (Auto adapt)|
|Display||3.5 inch digital TFT-LCD ,480(RGB)x 320 resolution|
|LCD adjustment||Brightness, Contrast, Saturation adjustable|
|Video IN/OUT||1 channel BNC Input & 1 channel Output|
|Video Output Mode||1.0 Vp-p|
|Video Level test|
|Level test||Video signals measured in IRE or mV|
|Communication||Support RS232 and RS485|
|PTZ Protocol||Compatible with more than 30 protocols such as PELCO-D/P, Samsung, Panasonic, Lilin, Yaan, etc.|
|Video Signal Generation|
|Color bar generator||Output one channel PAL/NTSC color bar video signal for testing monitor or video cable.(red, green ,blue, white and black color )|
|UTP CABLE TEST|
|UTP cable test||Test UTP cable connection status and display in the screen. Read the number of the test box.|
|DC12V 1A power output|
|DC12V power output||Output DC12V1A power for camera|
|Audio input test|
|Audio input test||test the pickup and other audio equipments on the front-end|
|RS485 data analysis|
|Data Monitor||Captures and analyzes the command data from controlling device|
|10 x zoom of image|
|Image 10x zoom||10x zoom image display and video out|
|Photograph,Video record, Record playback|
|Photograph||snapshot and save the current image as JPG file|
|Video record||Video record and storage the file|
|Record playback||To view the storage file in the SD card|
|Find the connected POE port quickly.|
|IP scan, Link monitor, PING test|
|IP scan||Find out the connected IP camera or the other network equipment IP address quickly.|
|Link monitor||Check the IP address whether is occupied|
|PING testing||Test IP camera or Ethernet port of the other network equipment whether work normally, and check the IP address|
|Cable scan||Search the cable by the audio signal|
|POE tester||Display the power supply voltage and cable connection states|
|TDR Tester||breakpoint and short circuit measurement(BNC cable, telephone cable)|
|Power Adapter||DC 5V(1.5A)|
|Battery||Built-in 3.7V Lithium polymer battery ,3000mAh|
|Rechargeable||After charging 3-4 hour, working time lasts 11 hours|
|Low Consumption||Energy saving technology, the battery icon real-time display|
|Operation setting||English/Chinese and other languages OSD menu|
|Auto off||5-60 (mins)|
|Dimension /Weight||194mm x 112mm x 48mm / 540g|
1.HOW LONG CAN I GET THE FEEDBACKS AFTER WE SEND THE INQUIRY?
We will reply to you within 8 hours in working days.
2.ARE YOU A DIRECT MANUFACTURER OR TRADING COMPANY?
We are a factory. We also have our own international trade department .
3.WHAT PRODUCTS CAN YOU OFFER?
We mainly produce CCTV power supplies, power adapters, CCTV connectors, video baluns, and other CCTV accessories.
4.CAN YOU DO OEM PRODUCTS?
Yes, we can.
5.HOW MANY EMPLOYEES OF YOUR COMANY? WHAT ABOUT TECHNICIANS?
We now have 260 employees, including 10 engineers and 10 technicians.
6.HOW TO GUARANTEE THE QUALITY OF YOUR GOODS?
Firstly, we will do the inspection after every process. For the finished products, we will do 100% inspection according to the customers' requirements and the international standard.
7.WHAT'S YOUR TRADE AND PAYMENT TERMS?
When we quote for you, we will confirm with you the way of transactions ,EXW, FOB, CIF, CNF, etc.
For mass production goods, you need to pay 30% deposit before production and 70% balance before shipment. The most common way is T/T. Of course, Western Union, Paypal, MoneyGram, L/C are also acceptable according to different situations.
8.HOW TO DELIVER THE GOODS TO US?
Usually we will ship the goods to you by sea, because we are in Hangzhou. We are between Shanghai Port and Ningbo Port. It is very convenient and efficient to ship goods to any other countries. Of course, if your goods are very urgent, the Ningbo Airport and Shanghai Airport are also very nearby. So we can send the goods to you by air or by courier such as TNT, FedEx, DHL, UPS,etc.
9.WHERE ARE YOUR PRODUCTS MAINLY EXPORTED TO?
Our products are mainly exported to the United States , the United Kingdom , Italy, Spain, Netherland, Portugal, France, New Zealand, Singapore, South Africa, Mexico, Colombia, and many other countries.
WHY CHOOSE US
1.Long History and Stable ProductionWe have more than 10 years' experience in the CCTV security and surveillance industry.
We have exported our products to more than 50 countries and regions, such as the USA, UK, Italy, Spain, Netherland, Portugal, France, New Zealand, Singapore, South Africa, Mexico, Colombia, etc.
Our production capacity is stable. We can arrange the shipment to you in time .
2. Strict Quality Control System
We have strict quality control system. All of our technicians are professional. They are strict on quality control.
Before order, we can send the samples for your testing . We ensure the quality is the same as bulk order.
We will reply to you within 8 hours in working days.
4. Prompt Delivery
We can usually deliver goods between 7 to 15 days.
We have good cooperation with many professional forwarders here. We can send the goods to you on time.
5. Long Warranty Time
Our warranty time is two years.
If there is something wrong with the products we sell, we will support you with technical analysis and solutions. We will also supply replacements if necessary.
We have sold a lot in the USA market for over 10 years and with very few bad feedbacks. The failure rate is less than 1%.
6.FREE Lifetime Technical Support
Our technical support is provided freely throughout pre-sale, on-sale and after-sale.
7.Knowledgeable Sales & Support Staff
We have a strict staff selection criteria and training system.
8.Outstanding Customer Testimonials
9.We NEVER Sell or Share Your Information
Without your permission, we will never sell or share your information to any person or company.
10. We Have Long-Term Development Planning
Our purpose is not simply to make money. We intend to make the brand reputation with 3 to 5 years. So we pay great attention to quality and service.


Paige is an accomplished leader and serial technology entrepreneur with experience in leading global operations, work products, human capital, budget planning, business development, and executing innovative technology.
Devices that contain high-frequency digital circuits typically emit electromagnetic (EM) energy concentrated around a number of distinct frequencies. This means that all consumer electronic devices that contain integrated circuitry are subject to poor signal-to-noise ratio due to internally generated electromagnetic interference (EMI) from the digital logic processes.
Mitigating EMI provides specific challenges to device manufacturers in their attempt to improve device performance. Slip Signal is a set of digital logic families with intrinsically low electromagnetic emissions and deployed as digital building blocks, which is used to mitigate EMI in modern electronic equipment.
Slip Signal Technologies, LLC is a semiconductor design and consulting startup company founded in 2022. Our mission is to revolutionize digital logic by developing technology that natively reduces self-generated electromagnetic emission from digital logic processes, thereby giving semiconductor engineers and device manufacturers more innovative room to build tomorrow’s products today.
Our technology helps businesses overcome electromagnetic compatibility (EMC) test failures by expediting:
- Certification approvals and the ability to release products into the market in a timely fashion.
- Innovation of design processes by streamlining technical development, thereby saving time and money.
- Resolve poor-performing devices by minimizing signal electronic interferences.
Unlike traditional digital logic processes , all boolean and sequential functions are performed in Gaussian pulse domain when using Slip Signal. Because of the low harmonics, Slip Signal natively reduces self-generated electromagnetic emissions.
Digital Logic is the “engine” that powers electronic automobiles, medical devices, and consumer products including cell phones, personal computers, laptops, tablets, cable /internet services etc. Slip Signal can be used in all integrated circuits that use digital logic and is compatible with traditional digital logic families.
Who We Are
Ernest has a track record in leading teams to develop innovative technology tools that address specific stakeholder needs, some of which have been featured in the Harvard Business Review


We live in the communication age. A time when man has made gigantic technological advancements by developing enormous communication infrastructures that will pave the way for future growth and development. Such technological growth has directly influenced how leaders run their businesses; technology will continue to force generations of business leaders to adapt to the new ways to communicate their messages in order to stay productive. As an example of one of these advancements, our generation now enjoys the comfort provide by mobile technology. People have become dependent of such technology to perform daily personal and business tasks. When man invented the first microcomputer in 1975, it created great expectation and admiration around the world. Although that was a huge achievement, nothing would revolutionize the technology industry as it happened with the development and introduction of the internet around 1970; a technology capable of moving and sharing large amounts of information for long distances in a fraction of a second. The internet, having its successful massive explosion in the mid 1990’s, is defined by the Encyclopedia Britannica (2011) as an infrastructure of systems that perpetually changed the communications and business industry by allowing indigenous networks around the world to communicate. An infrastructure whose complex design mimics the basic principles of human communication: System A uses a communication medium to sends a message to System B. System B acknowledges the message was received, process the message and responds to system A. Clark (2010) defines our communication process as a host sending a message to a receiver; while in transit, the message could be affected by barriers of communication; once it reaches the destination, the receiver process the message and responds. Even though nations, governments and technology have evolved with time, the structured way we communicate and the principles behind it stay the same....
References: Clark, D.R. (2010). Communication and leadership. Retrieved from
Internet. (2011). In Encyclopedia Britannica. Retrieved from
Stiroh, K. J. (2001). Investing in information technology. Retrieved from
The White House. (2011). Technology. Retrieved from
U.S. Census Bureau. (2012). Adult computer and adult internet users by selected characteristics.
Retrieved from http://www.census.gov/compendia/statab/cats/information_communications.html
Zemke Outlines Tips for Overcoming Generational Differences. (2000). Office Pro, 60(7), 23.
Please join StudyMode to read the full document


Voice over Internet Protocol or VoIP is increasingly becoming popular in the business world. Voice over IP allows its user to make calls using the broadband internet. These calls can be made anywhere and because they are routed via the internet instead of the public switched telephone network, the cost is greatly reduced. Because of this Voice over IP is also known as IP telephony or broadband telephony.
Voice over IP has transformed the ways in which businesses and individuals communicate. Not only calls can be made at minimal prices, companies can even gain benefit from the added services this technology offers. These include call blocking, this particularly helpful for companies to stay away from unwanted spam or calls. Voice over IP providers also offer call waiting, call transfer and three-way calling. In some cases conference calling can be done with more than three users. This is very helpful in scenarios where the input of multiple employees on a team need to be considered at the same time. People can talk simultaneously and exchange views.
Calls made via Voice over Internet Protocol can have a high quality. This is because voice is divided into packets and then recollected at the end of the called party. If the internet connection has a high bandwidth then the quality of the call will also increase. This flexibility of fineness of a call is not possible with public switched telephone network.
Furthermore, video calling is also possible through Voice over IP. This facility was unheard of with the traditional telephone. Such benefits have caused Voice over IP to be used at even a personal level. Relatives can video call online and see their loved ones from far away as long as both parties have a working internet connection. From a business perspective, if a manager is away on business or leisure activity he can still conduct meeting by video calling his entire team. Important decisions and points can still be put forward. This gives a lot of mobility to a company’s employees.
Voice over IP can also be used to set up toll free lines, similar to a call centre. A company can answer queries of its customers around the clock with minimal rates. Auto-attendant capabilities are also provided because of Voice over IP. Moreover, instant text messaging is provided free of charge. Companies may charge extra if calls have to be made over the public switched telephone network. The flexibility of this option makes it easier to use the same platform to connect anywhere.
Added services include retrieving fax online via an e-mail address. Call history can also be checked through web access. Additionally, Voice over Internet Protocol also allows voice messaging or voice notes.
Voice over Internet Protocol is becoming more global due its many advantages. It offers way more services than the public switched telephone network. It allows users to talk to people from any part of the world. It has become an easy way to make calls and share multimedia.


The camera’s 15” tilt-up and total tilt range of 210” make it ideal for environments such as multi-storey car parks, shopping centres, terminals and other buildings.
Powerful 20x optical zoom capability
20x optical zoom delivers greater flexibility in finding and tracking targets. 12x digital zoom capability provides a total zoom ratio of 240x.
Choose the compression format that suits your needs
This camera supports three compression formats: JPEG is the best choice for high-quality still images; MPEG-4 provides clear video images over limited-bandwidth networks; and H.264 is the alternative for severely limited-bandwidth networks, with twice the efficiency of MPEG-4.
Day/Night function for optimised images in all light conditions
Optical Day/Night function switches the camera between Day (colour) and Night (B/W) modes, so that in Night mode the camera becomes sensitive to near-IR light and can reproduce images not visible to the naked eye.
Wide-D technology optimises images with varied lighting conditions
Wide-D technology expands the video dynamic range of your camera to improve the visibility of images with high or poor contrast.
DEPA for intelligent camera-side analysis
Sony’s DEPA (Distributed Enhanced Processing Architecture) technology allows the camera to send not only images but also related metadata, including object size and position, to the DEPA-enabled recorder. Unlike conventional analytic systems, where all of the image processing is performed by the recorder, DEPA thereby avoids CPU overload.
hPoE for greatly simplified installation
The camera’s ability to be powered through the same Ethernet cable that it uses for data transfer, through high Power over Ethernet (hPoE – IEEE802.3at), significantly reduces physical infrastructure costs and accelerates deployment.
On-board recording for reduced network traffic
The camera’s SD memory card slot gives you the option to perform on-board recording to reduce network traffic.
RealShot Manager Lite for instant performance
Recording software (RealShot Manager Lite) is bundled with your camera so that you can start recording and monitoring immediately.
ONVIF compliance for compatibility and confidence
The camera conforms to ONVIF (Open Network Video Interface Forum) version 1.02, the widely-accepted protocol for information exchange between network video devices, giving you confidence in its breadth and ease of compatibility.


When it’s time to deliver new infrastructure zero touch provisioning is an increasingly popular automation solution for reducing errors, saving time, and fully automating bare metal network and server provisioning in data centers of any size. Without any manual intervention, zero touch provisioning is able to aid in both the initial setup and upgrade of an existing network. Additionally, zero touch provisioning helps simplify and accelerate deployment and can adapt to almost any deployment scenarios.
The ability to get more done faster without sacrificing security or scalability is one of the core challenges facing the modern IT department. With Puppet and Ansible, you’re able to take control of your IT infrastructure to easily and seamlessly streamline how you deliver services and applications in a cost effective, simple, and secure way.
Contact an Armature Systems representative today for more information on how to plan, build, and launch your information technology infrastructure.
All Rights Reserved © Armature Systems


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In my latest blog entry I covered the list of TAP commands for my Bose Solo TV sound system. But I did not mention how I got a connection to its serial port, which is what this post is all about.
Let's start with a little quote from the service manual you can find by googling a bit:
Required Equipment: 1. Tera Term terminal emulator - download at http:// sourceforge.jp/projects/ttssh2/ 2. TAP cable 264565 (used for TAP commands) 3. RS232-TTL Converter - B&B electronics Model 232LPTTL or similar - http://bb-elec.com 4. An A/D converter and audio generator 5. Computer setup to issue TAP commands - see page 29 for instructions.
TAP cable 264565
I did some research on this ((I even contacted Bose), but could not find that much information about it. An other Bose product's service manual had a picture of it:
So we are facing a 3,5 mm 3-pole Jack to a DB-9 port.
Reading the product page/datasheet will provide you some interesting details:
RS-232 to TTL converters make easy connections between your TTL equipment and RS-232 ports.
This device obviously converts RS-232 coming in on one side to TTL going out on the other.
In an other Bose service manual I found this quote:
When using RS-232, a 3-wire connection is sufficient to communicate with the ESP, although the use of the CTS/RTS pins is optional. A crossover (or null-modem) cable will be required to connect the ESP directly to a PC.
Let's keep that in mind and compile a list of cable requirements.
Delock 83114 to the rescue
Counting one and one together I needed a cable that:
- does 3-wire (GND, RDX, TXD) connection
- has a 3,5mm Jack (Klinke) on one side
- is able to convert from RS-232 to TTL
- that is somewhat crossover.
So I ordered the Delock 83114, which looked just perfect on the data sheet.
Making the connection
Connecting the Delock 83114 to my Raspberry Pi seemed to work just right:
kernel: ftdi_sio 1-1.3:1.0: FTDI USB Serial Device converter detected kernel: usb 1-1.3: Detected FT232RL kernel: usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB0
So we have a new device living at /dev/ttyUSB0.
Checking the service manual again, which has some screenshots of Tera Term to specify the follow connection settings:
Baud 115.200 Data bits 8 Parity None Stop bits 1
Looks good, let's fire up a screen session:
screen /dev/ttyUSB0 115200
Unfortunately, this did not work right away. I got some strange clicks on the Bose system and the terminal session had no output or anything useful.
Doing more research I got inspired by this post on Hackaday. So I cut off the Delock cable, plugged it into the Bose system and connected it to my Arduino. Playing around with this setup suddenly brought some characters in the Serial Monitor! I had crossed the connection of RDX/TXD by mistake, but obviously met the last connection requirement.
The output had some strange characters in it. Digging deeper into this topic I found that it is maybe not the best idea to run a 115.200 Baud serial connection with an Arduino.
So I re-wired the Delock cable again, this time RDX/TXD crossed like shown in the picture below:
What shall I say: it worked on the Raspberry Pi now. \o/
The only question left for me is this: Is there a standard cable (3,5 mm Jack to USB) that has the Tip (TXD) & Ring (RXD) crossed?


Step 1: Network Installation Instructions
A. Please Check to Make Sure That You Have the Following Package Contents:
1. Voip Adapter
2. Ethernet Cable
3. A 5 Volt Power Adapter
B. You Will Also Need:
1. One or Two Analog Touch Tone Telephones (or Fax Machine) Connect the Networked Devices with Ethernet Cables.
2. Power down all the devices you will be networking: Cable/DSL Modem, PC, Voip
Adapter. Connect an Ethernet cable from the Cable or DSL Modem to
the ETHERNET port of the VOIP Adapter. Note: If you are connecting the
VOIP Adapter to a local area or home network, connect an Ethernet cable from
the WAN port of the VOIP Adapter to the LAN port on your network switch/router.
Do not connect the VOIP ADAPTER WAN Port to an Ethernet hub.
Step 2: Telephone / Fax Installation and
Power-UP From the Rear of the VOIP Adapter:
A. Insert a standard RJ-11
telephone cable into the VOIP Adapter PHONE 1 port.
B. Connect the other end of
the cable to an analog telephone or fax machine.
C. Insert a standard RJ-11
telephone cable into the VOIP Adapter PHONE 2 port .
D. Connect the other end
of the cable to an analog telephone or fax machine.
Note: Do not connect RJ-11
telephone cable from the VOIP Adapter to the wall jack to prevent any chance of
connection to the circuit switched telco network. You may now insert the plug
end of the power adapter into a live power outlet which will power up the VOIP
Adapter. At this time, you may now power on the Cable / DSL modem.
For more information please call 1-877-411-5947


The PICO MK5 Media Player features a range of additional, advanced features putting you in control of your content.
- Add multiple media players to your account and group screens in order to send targetted material to specific sites and groups.
- Create customised playlists and display your content based on date, time or even seasons. For example a restaurant could offer different menus for breakfast, lunch and dinner
- Send instant emergency messages with a single click. For example fire alarms or security alerts.
- Use QR codes on your screen that your audience can engage with on their own device allowing them to control content on the screen interactively.
Clevertouch Ecosystem Integration
The PICO MK5 digital signage media player can be integrated with other technologies based around the Clevertouch content management system in order to provide an organisational-wide digital communications solution.
Additional products include room booking, interactive touch panels and professional displays for indoor and outdoor use.
All products can be managed from the same Clevertouch cloud CMS platform which is backed up from a single manufacturer, training team and support team.


h a l f b a k e r y
Not from concentrate.
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
or get an account
When you check your pages, and want to call someone, the pager could dial the number for you. All you have to do is find the page, and hit "dial" on the pager. You would hold the pager near the handset on the telephone, and the pager would make the tones appropriate to dial the number selected. Such
a technology would be extremely easy to implement into a pager. Really isn't a huge deal, but a nify feature.
'This function can be used after a page has been received. It will allow the pager to dial out the phone number automatically through a telephone speaker. You will press the function button and place the pager against the telephone speaker and the phone number will automatically be dialed ' Sorry. [angel, Jul 06 2001]


Alcatel Mobile Price In Pakistan
Alcatel entered the Pakistan mobile industry a few years ago and has brought some great smartphones to the market. Alcatel has a low-budget to mid-range mobile phones, all of its smartphones have a great selfie and main cameras, processors, and other amazing features.
Alcatel was founded in 2004 by joint cooperation of Alcatel-Lucent of France with TCL Communications, which is a Chinese company. Alcatel was formerly known as Alcatel OneTouch and it manufactured Android mobile phones and Tablets series. It’s an internationally acclaimed technology that manufactures mobile phones and tablets.
Alcatel’s OneTouch mobile series was a great hit globally and it earned great popularity.
The best thing about Alcatel is that it manufactures the best wireless charging mobile phones and many of them are available in Pakistan as well. Foreign companies like Alcatel find it hard to enter the dynamic and tough competition of the Pakistani industry but Alcatel had all the qualities that were needed to penetrate the competition.
From its beginning, Alcatel has manufactured phones that were great in design and had a great operating system and features. People tend to buy phones that are stylish and that can enhance their personality. Alcatel has it all and its quality is what many people adore.
Its Android mobile phones are very reasonably priced and have all the features that you would like to have in a top-notch phone. It also has dual sim phones because that is something new and is trending across the industry.


23 Mar 2018
We often get queries about TV links not working. This is usually a very simple thing to fix, but clients get confused because they are not sure how to proceed through the process of elimination.
Snow is caused by
- RF signal from the DSTV decoder not reaching the TV.
- Remove the TV Link.
- Connect the RF cable from the decoder straight to the TV antenna in plug.
- using the TV remote, change the signal source on the TV to “TV”.
- using the TV remote, press the “menu” button and autotune the TV.
- Check P1, P2, P3 etc up to about P8 to see if the tuning has found your decoder signal.
If not, there is a problem with the connection from the decoder to the TV.
- Check the f-connector connecting to the “RF-Out” output of the decoder. If necessary re-seat the f-connector.
- Check the f-connector on the TV side of this same cable. If necessary re-seat this f-connector.
- Check the cable for joins, such as a barrel. You might have to be prepared to climb into your ceiling for this. If you find a barrel, replace it with a new one and re-seat the f-connectors on either side of it. Sometimes you might come across a splitter in the ceiling where your cable enters and leaves again. Most often it will be an “SLX Splitter” which are used to relay RF signals to TV Links. If this is the case, replace the SLX Splitter; most users at this point will probably be getting out of their depth so it will probably be best to call an accredited DSTV Installer. However, this is not often the case, so read on – the solution is usually a very simple one!
- Signal from the DSTV decoder reaching the TV but the TV not tuned in to the decoder “channel” frequency.
This is a very common problem. Some TVs will lose their tuning when powered off and on. So try autotuning the TV again as mentioned above.
- A faulty TV link This in turn has two parts to it:
- The electronic unit of the TV link is faulty
- The connector where the TV link plugs into the TV can be faulty. If one moves this plug where it fits into the TV antenna socket, and you see a fluctuating picture on the TV, this is a sign of a poor connection.
In either of these two cases, replace the TV Link and the problem will resolve.
Please note that this snow problem is a separate one from “My TV Link won’t allow me to change channels”, which we will address in a separate post.


This truly hands free Jet ski Communicator Kit has been custom made specifically for Jet Ski / PWC to Jet Ski / PWC Communication and is The ONLY PRACTICAL SOLUTION AVAILABLE ON THE MARKET FOR THIS APPLICATION. We know this because we have been searching for a solution for over TWO YEARS and come up with nothing that fit properly, so as a result we have had these units custom designed to do what we wanted to do – communication jet ski to jet ski whilst riding at any speed without having to take our hands off the handle bars and jeopardise safety whilst being able to clearly hear each other without being drowned out by wind noise etc. Obviously, there are other benefits such as being able to communicate with SEAWAY Towers before crossing bars and also being able to communicate with local volunteer marine rescue radio rooms...
This Product perfectly eliminates the background noises and avoids echoes.
We have also had our own custom made neoprene pouch made to suit our Cobra VHF Hand Held Radios with our hands free kits which mount the radio on a strap of your life jacket safely. When you wish to remove your radio to charge the battery, you can easily.
The durability, superior audio performance and excellent design specifically for jet skis with our neoprene pouch and waterproof connectors to our waterproof Cobra radios combined with the handlebar press to talk button makes this the only choice for PWC enthusiasts.
We simply set up the kit on our life jackets and leave them on the PFD’s. Only the Radio is removed from the jacket to re-charge the radio battery as needed. This makes it real easy every time we want to use our jet skis, it’s all ready to go!
We use them when we travel in a small group (practically every week end) – we no longer need to stop and try to get their attention to call someone over to tell them something. We can now point out things along the way to each other – including letting each other know of potentially dangerous scenarios up ahead that the other riders may not have seen yet or suggest an alternaative route or simply point out a great view we spot along the way.
With our fully custom designed comfortable earpiece combined with our heavy duty throat microphone and handlebar mounted press to talk button – this is the ideal bundle with our Cobra VHF Two Way radios as it frees your hands from having to hold the Microphone whilst riding. It produces almost NO WIND NOISE and is loud and clear at high speeds. The ear piece fits snugly in your ear and the microphone is comfortable around your neck. When in use, the hands free throat microphone blocks out virtually all background noise. It also features a lapel clip which can be clipped on your life Jacket so the hands free cable does not get in your way.
The Throat microphone has been designed with a high quality new generation transponder that sits on the side of the neck ring. This greatly improves vibration sensing and provides a reliable communication - the dual transponders we tested did not compare to a single high quality transponder.
The neck strap which is adjustable for a comfortable fit, has been designed with a magnetic break-away which enables quick and fast removal, yet is designed so that whilst on your neck, wont break loose.
On top of this, the ergonomically designed transparent acoustic coiled tube earbud provides a low profile look and can be adjusted vertically. And it can also be rotated horizontally to locate the ear tunnel for optimal comfort.
- Designed to be used for PWC / Jet Skis
- Neoprene PFD / Life Jacket Pouch
- Ultra-sensitive dual microphone system cancels noise by over 90%
- Adjusts to fit user’s ear & neck
- Polyurethane cable reinforced with Kevlar
- Modular Microphone cable
- Coiled Acoustic tube from inbuilt speaker with outstanding volume and clarity
- Waterproof inline PTT Switch
- Handlebar Mounted PTT Switch
- Applicable to all types of sport even outside PWC/Jet skiing – snow and water skiing, snowboarding, snowmobiling, skateboarding, motorcycling, fishing, boating, hunting, camping, cycling, canoeing, kayaking, paintball and more!
- Heavy Duty Throat Microphone specifically chosen that suits the use on a jetski / PWC environment.
This heavy duty throat microphone comes with proprietary bone conduction transducer with dual microphone sensors to ensure excellent audio quality and intelligibility. The comfortable neck band for secure wearing position is designed to enhance audio quality while the quick disconnect feature allows for various listening options to suit a diversified working environment. It was designed specifically for people working in a high ambient noise environment like we are in with our jet skis at speed. It is a highly robust Heavy Duty Throat microphone which has an Excellent anti-noise capability. The Polyurethane cable has been reinforced with Kevlar and designed with the extra jack for REMOTE PTT. It is discreet and can be worn with a helmet and mask if you are racing and wish to communicate with your crew back on land. The built in PTT button which is located close to the Throat Microphone and hangs around the chest area (this was put there in case you fall off the PWC and need to continue communicating) has a Large PTT operating area.
Using these two models of the latest Cobra Waterproof Marine VHF Radios which are both 5 Watts Transmission power, distance certainly is not an issue - there is not a more powerful Marine VHF Radio on the market.
There are Two Bundles available and are purchased as one kit per rider including the Radio.
There is only one decision to make which comes down to an additional four features - a 20 second rewind feature which enables you to rewind the last 20 seconds of received transmissions on the fly - which is a handy feature, lithiumm polymer batteries to give you longer talk times between recharges and a preset channel button which enables you to go straight to your favorite channel with a single press of a button and Vibralert - a silent alert for incoming calls. Ideal for noisy or all-quiet environments. These extra four features add $100 to the cost.
Cobra JetSki Communications Kit B - Communicate with other Jetski's on the WATER HANDS FREE!!!
****** NEW MODEL ******
$399 INCL GST with Custom Made hands free Jetski / PWC communication kit which includes the throat microphone setup with earpiece, custom made newprene lifejacket pouch, in-line PTT and Handlbar PTT button, special earpiece as described above all Bundled in!
Details of the Radio are below:
Cobra MRHH 325 EU Hand Held Marine Radio 2 Years Warranty UNIQUE FEATURES FOR THE MRHH 325 EU
• Unique Compact Design
• Submersible to JIS7 Standards
• Tri-Watch and Unlimited Memory Channels
• Powerful NiMH Battery
• External SpeakerMic Jack with waterproof connection for Full Wave Marine Jet Ski / PWC Hands free Kit.
• Selectable Power Output - 1, 3 or 5 Watts
• Large Illuminated Display
• Signal Strength Meter (Transmit and Receive)
• Illuminated Function Keys
• Instant Channel 16
• Spring Loaded Belt Clip
Click Here for the Brochure on the Cobra MRHH 325
Stock Available in 2-3 Weeks
GO FOR THE TOP OF THE RANGE SETUP!!!
Cobra VHF Radio Communications Kit A - Communicate with other Jetski's and boats on the WATER HANDS FREE WITH REWIND FEATURE, Even Longer Battery Life, One Touch Preset Channel button and the Vibralert Feature for only $100 more!!
$499 INCL GST with Custom Made hands free Jetski / PWC communication kit which includes the throat microphone setup with earpiece, custom made newprene lifejacket pouch, in-line PTT and Handlbar PTT button, special earpiece as described above all Bundled in!
****** NEW MODEL ******
Cobra MRHH 415 EU Hand Held Marine Radio 2 Years Warranty Unique Features include:
- Preset Button - Save Your Favorite Channels
- Cobra Unique Rewind-Say-Again
- Provides a silent alert for incoming calls. Ideal for noisy or all-quiet environments.
- Longer Talk Times with Lithium Ion Polymer Battery
20 Hours@ 5 Watts
35 Hours @ 1 Watt
Included Lithium Ion Polymer Battery
11 Hours @ 5 Watts
18.5 hours@ 1 Watt
- Selectable Power Output - 1, 3 or 5 Watts
- Unique Compact Design
- WATERPROOF - Submersible to JIS7 Standards
- Unlimited Channel Memory
- External SpeakerMic Jack with waterproof connection for Full Wave Marine Jet Ski / PWC Hands free Kit.
- Large Illuminated Display
- Signal Strength Meter (Transmit and Receive)
- Illuminated Function Keys
- Instant Channel 16
- Spring Loaded Belt Clip
Click Here for the Brochure on the Cobra MRHH 415
Stock Available in 2-3 Weeks
1. How does it work?
Answer: The microphone for most communication systems is based on traditional acoustic induction from sound waves in the air. The Throat Mic separates the environmental noise from voice via a non-traditional method of sound induction through the vibrations of the throat. The Throat Mic picks up the voice signals from the vibrations in the users' necks, rather than from the air. The result is clear communication direct from the throat to the microphone without the utilization of air as a medium of induction perfect for boats, Jet ski’s, convertibles and other noisy environments such as heavy machinery.
2. How does the noise get cancelled?
Answer: One common method for cellular phones is that it "filters" (takes out) frequencies that are outside the range of the human voice. This results in reduced noise but does not truly cancel out background noise. Any sound (noise) that is in the same frequency of the human voice would be heard as well. However, the Throat Microphone does not cancel noise because it does not pick it up. Due to the voice coming from the vibrations in the neck and not from the air, there is no extraneous background noise for the microphone to pick up and therefore it wont suffer from background noise like the noise cancelling system.
3. How can I optimize the performance of the Throat Microphone?
Answer: While we suggest placing the transponder about 0.5 - 1 inch on either side of your larynx/voice box, the optimal position on the neck to place the Throat Mic's transponder will vary between individual users. Therefore, each user is encouraged to find his or her own optimal position. Moving the transponder closer to the voice box increases volume but may result with slight distortion if it is too loud. Conversely, positioning the transponder away from the voice box and closer to below the ear will result in a more natural sound. However, moving too far away from voice box, the volume will be compromised.
Stock Available in 2-3 Weeks
Click here to BUY NOW at our on-line store


Homebrew Smart Door
Smart locks are now commonly available, but they are plagued by hardware and software vulnerabilities that make it trivial for attackers to unlock doors in-person and/or remotely. Smart doorbells bring a number of privacy concerns.
Plus, there's no fun in buying these problematic off-the-shelf products when you can build yourself something better!
The Smart Door is my custom-built integrated smart lock, doorbell, and security system.
The Smart Door is assembled with 3D printed cases and mechanical parts for exterior and interior components.
Inside, a housing is mounted on the door. A 3D printed cam bar replaces the thumbturn, allowing a servo to directly drive the standard deadbolt. The housing contains the servo and some electronics.
Outside, a larger case holds a number of visitor-facing components.
Everything is controlled with a Raspberry Pi running custom node.js software. There is also a separate internet-facing server hosted on my home network which coordinates with the door controller (and other home automation devices). The door controller is not directly exposed to the internet.
A servo motor is attached to the deadbolt to lock and unlock the door. A button allows users to unlock the door and a LED indicates status. A Hall effect sensor detects whether the door is open or closed.
Each of these components is controlled by GPIO on the Pi.
The box mounted on the apartment's exterior wall packs in several features.
- Button with RGB LED ring acts as a fancy doorbell. When pressed, a sound is played inside and a push notification sent to my phone.
- A small OLED screen shows status info.
- A wide-angle camera streams live video to my phone.
- Speaker and microphone for 2-way communication.
- NFC card reader
There are multiple ways to unlock the door.
Both the phone and watch apps can communicate over the internet or Bluetooth LE (BLE). Over the internet, an encrypted and signed unlock command is sent to a server hosted on my home network (no cloud services involved). The server authenticates commands and forwards them to the Pi.
When in physical proximity to the door, Bluetooth is automatically used for direct communication between the app and the Pi. The door issues a cryptographic challenge, which the app signs with a SHA256 HMAC, and sends a response back to the door when the user presses the app's unlock button.
Like BLE, a HMAC challenge/response is used over NFC. Both the phone and watch apps implement Android HCE, which allows a simple tap-and-unlock (without having to open the app).
The NFC reader also works with passive smartcards. A YubiKey can securely unlock the door.
Both Bluetooth LE and NFC allow door unlocks even if internet connectivity is unavailable.
Finally, limited-use keys can be generated and sent to guests. The key is a URL with a token that guests open in their browser, where they find a page with unlock buttons. Links automatically expire at a set time.


Hebei Haihe Special Cable Co., Ltd., founded in 2008, our company specializes in producing power cables, radiation cross-linked wire and cable, flame-retardant wire and cable, fire-resistant wire and cable, low-smoke and halogen-free wire and cable, control cables, shielded cables, Frequency conversion cable, computer cable, rubber cable, construction elevator special cable, elevator cable, with steel cable...
The company has a complete management system from research and development, technology, production, testing, quality supervision, warehousing, logistics, etc. It has passed ISO9001 certification and operates in accordance with the international quality system. The products need to pass more than a dozen tests from raw material inspection to finished product delivery. This guarantees the excellent quality of our products.
Tel：+86-319-5567077 5567099 5566456
Add：The first industrial zone of Dacaozhuang Management District, Xingtai City
Copyright: Hebei Haihe Special Cable Co., Ltd. 冀ICP备15010822号-2


ATTENTION CBRE PROJECT MANAGERS
ComNet Communications installs and maintains mission-critical network infrastructure systems. In addition to traditional voice/data cabling, we have developed the capabilities and reputation as an industry leader for data center, audio visual, sound masking, integrated security, public safety, DAS, and traditional wireless design and installations.
ComNet is proud to be a participant of the CBRE Partner Excellence Program (formerly the Fusion Program). We specialize in providing cutting-edge technology solutions for CBRE projects. Our team is dedicated to ensuring that your project is a success by delivering reliable and scalable technology solutions that are tailored to your unique requirements. Whether you are looking for network infrastructure, audio-visual solutions, cellular, or Public Safety, we have the expertise and experience to deliver the right solution for your project.
THE RIGHT CHOICE TO CONNECT YOUR BUSINESS
"We couldn't have done it without you. Your tireless commitment to excellence, knowledge and experience made the difference and produced a great result."
// National General Contractor
Media & Entertainment
Food & Beverage
Warehouse & Storage Facilities
Event Planning & Exhibitions
Provided ongoing support to day to day operations and large scale projects while addressing the unique requirements of corporate office spaces, trading floors, data centers and retail banking sites.


Laser AAC conductors are made up of multiple strands of hard drawn aluminium as per IS; ASTM, BS EN, DIN; IEC, NFC. These conductors are used in low, medium and high voltage overhead lines. These are extensively used in urban areas where spans are usually short but conductivity is high. Due to the high corrosion resistance property of aluminium, AAC conductors are majorly preferred and used in coastal areas.
-AAC is principally used in urban areas where spacing is short and the supports are close
- AAC used in coastal regions owing to its high degree of corrosion resistance and is also used extensively within the Railway and Metro industries.


It is looking likely that Apple’s 2020 iPhone launch will include a total of four new 5G-capable devices. Most insiders had suspected this and many were confident that 2019 would be the year of 5G-capable devices for Apple. As resellers know, September’s launch of the iPhone 11 series dashed any hopes that the brand would usher in the age of 5G technology before Christmas. Apple’s decision to postpone a 5G launch actually places the company behind competitors like Samsung in the American market. Apple’s decision to delay was a calculated one, as 5G infrastructure, technical features, and market demand weren’t mature enough in 2019. That could change this year. Let’s take a look at why 2020 could be the year of Apple’s 5G launch and what effects it might have on the secondhand market.
What can we expect from Apple’s 5G phones?
Apple has been quiet about what its 5G products will look like. The consensus among analysts is that Apple will release four phones in three sizes in 2020. We expect to see phones that measure in at 5.4 inches, 6.1 inches, and 6.7 inches. The largest model will likely come equipped with sensor-shift technology that provides users with better quality for photos and videos during motion shots.
Let’s compare this projection of Apple’s 5G design with the Samsung Galaxy S10 5G that’s currently leading the 5G market. The Samsung Galaxy S10 5G is essentially Apple’s only true competitor in the American market for the time being. This Android 9.0 device measures in at 6.7 inches. That’s an exact match to what is expected for Apple’s largest 5G model. Apple will be in direct competition with Samsung if it releases a 5G phone that mirrors the size of the popular Galaxy 5G option. Apple is likely targeting consumers who like extremes by releasing a 5G model that’s just 5.4 inches.
Apple’s anticipated option for a phone measuring at 6.7 inches is notable because it appeals to consumers who stream or produce entertainment on their phones. 5G is ideal for both streaming and livecasting. Both the front and rear cameras on the Galaxy S10 5G have 3D depth. Apple consistently outshines Samsung when it comes to image capturing, and few expect this to change with the launch of Apple’s 5G phone. The rumor that Apple plans to use sensor-shift camera technology on at least one of its 5G phone models signals that the new 5G-capable phones will be heavily marketed to content creators, gamers, and tech-minded users.
When will the new phones launch?
While it is very likely that Apple will stick to its September launch tradition for 2020, rumor has it that Apple will be switching to a twice-per-year device launch schedule in 2021 to match its competition. The shift would give the company increased flexibility to adjust its products to compete with devices launched by other manufacturers throughout the year. Some observers are speculating that 2020 could even see a split launch date. We will only have these rumors to contemplate until Apple releases an official statement regarding its 2020 5G device lineup. Everything we’re speculating on now is based on analyzing the parts-purchasing records of Apple.
How would multiple releases impact the second hand market?
If Apple does go with a twice-a-year release cycle going forward, this could have significant impacts on the secondary market for used phones. On the one hand, due to a reduction in consumer hype associated with one big release, each individual release would likely result in less supply hitting the market during the post release period. However, if overall volumes throughout the year increase, this would still be a great thing for resellers. Another major potential benefit of a twice-a-year release cycle would be less pricing volatility after each individual release. The flip side of this is that, in the short term, resellers would need to recalibrate all of their expectations on how second hand market pricing would move throughout the year. It might take a couple of years for resellers to learn the new patterns of supply and demand. In the intervening years, we could see an increase in volatility as nervous resellers try to guess what will happen to the market price.
How might 5G impact secondhand volumes?
5G availability doesn’t necessarily mean that resellers are going to see a sudden increase in trade-in volume for 4G devices. A report from Cisco predicts that 5G devices will account for just 9 percent of the mobile data market in the United States by 2022. This data indicates that the launch of 5G won’t result in any major spikes in volume or price disruptions. While many devoted Apple consumers will be eager to trade in their 2019 devices to upgrade to 5G devices, coverage capabilities will need time to catch up. Widespread conversion to 5G isn’t really possible yet. Urban consumers may take the transition to 5G for granted, but many rural parts of the United States are only now getting reliable 4G service. Major carriers like AT&T, Verizon, and T-Mobile still provide only very limited 5G networks. 5G devices spend a lot of time running on 4G networks. Our position is that 5G won’t be ready for significant mainstream consumption until at least 2021 or 2022. In conclusion, it appears to us that the potential for multiple releases may have a larger impact on the second hand market than the introduction of 5G, at least in 2020. The transition to 5G will be gradual when it comes to creating purchasing changes across both the new and secondhand markets. Create an account with WeSellCellular.com to stay on top of the latest inventory and industry trends.


- new generation USB interface for PCM up to 384kHz and DSD up to 4x
- USB compatibility with Windows, Apple OS, Linux
- PLink I/O compatible with all Playback Designs products(*1)
- Newest generation PDFAS clocking technology for ultra low jitter performance
- USB powered with connection for optional external power
- Firmware can be updated by end user
Purpose: this simple USB to PLINK interface is designed to isolate any USB source from the sensitive DAC via our high quality, synchronous fiber optic PLINK connection. It borrows this concept from it's bigger brother, the MPS-X, which is not just limited to the USB interface like the USB-X4, but also includes a variety of other interfaces and features as well (see MPS-X product page for more details). Any digital source with a USB host interface can connect to the USB-X4 which then is connected to any of our DACs(*1) through PLINK. All asynchronous clocks that are mandated by the USB interface standard and any other digital noise from the source are therefore kept from entering the DAC where they would always cause some audible deterioration. Asynchronous data streams from the USB source are carefully filtered with our PDFAS algorithm and synchronized to an internal high quality audio clock. This results in a dramatic sonic improvement when compared to a direct USB connection to the DAC. The sound stage becomes even more defined, the performance even more liquid and overall more "analog-like". A valuable addition to any of our products.


Reliability Solutions will take part in the GPU Technology Conference Europe on 28-29 September 2016 in Amsterdam. The conference is dedicated to attracts entrepreneurs that use modern technological solutions as well as investors and the press. The aim is to expose modern technological solutions to the potential clients and encourage compelling conversation between professionals. RS is one of the six companies chosen by NVIDIA to present their work on the stage during the special part of the conference entitled “Emerging Companies Summit”. RS will present – for the first time – miniaturized and autonomous predictive maintenance device – “The Eye”. This device enables to predict machine failures in an effective way basing on the advanced artificial intelligence algorithms. The talk will be followed by the Q&A discussion. Our company will also beavailable at the stand during the whole conference.


Is the telecom sector ready for the next wave?
After growing at a robust clip over the past decade, the telecom sector ran into a wall of problems – from weak financials of operators to regulatory bottlenecks. As a result, the industry’s buoyancy and energy seems to have dissipated. But data services present new opportunities that could bring life back into the game
The telecom sector in India witnessed exponential growth, especially in the wireless segment, in the last few years. The wireless subscriber base in India grew from FY00 through FY10 at a compound annual growth rate of 77.5% to reach 584.3 million subscribers in FY10. This number climbed to 752.19 million subscribers in December 2010. Currently, the number stands over 900 million and is next only to China. Even the bouquet of telecom services has evolved, ranging from basic telephony to voice, video and data services, Wimax, WLAN and VPN, and bandwidth on demand to virtual private networks.
The sector is now migrating from pure play voice connectivity to offering a broad bouquet of data services like video calling, mobile TV, email, and chat. Many other utility services like m-payments and m-commerce are also becoming an integral part of consumers’ lives, transforming the mobile data traffic composition. This evolution is expected to increase mobile data traffic at a CAGR of 126% over the next five years.
Sure, the next phase will be data-driven but unlike the first phase – when operators riding on the back of an unprecedented boom of more than 700% in subscriber base from just 1 million subscribers to over 750 million between 1998 and 2010, scorched gangbuster growth – the new phase comes with daunting challenges. Already, intense competition in the sector over the past few years has dented the profitability of operators and affected their earnings. The industry could generate revenues of just Rs. 1131.8 billion in FY12 compared to Rs.1141.3 billion a year ago, dragging it back some 0.83%.
Feeling the heat, most telecom companies have already started raising their tariffs, passing on the burden on the ultimate consumer. Recent tariff hikes by telecom players reveal that it is the only option for revival of their growth. Given the fact that 3G is still at a nascent stage and VAS growth is also quite muted, tariff hikes will help telcos to earn more and to improve their situation. But while focusing on revenue and profitability is a step in the right direction, income augmentation is possible only if operators also put their shoulders behind enhancing their data services.
Unfortunately, the focus on data is largely missing currently as is evidenced from the huge deficit of applications across a spectrum of activities – health, agriculture, education, financial service and the whole electronic commerce platform, from couponing to ticketing. In this context, a faster rollout and spread of 3G services will facilitate introduction of various VAS such as video calling, gaming, high-speed Internet access and other data services. Given that a substantial part (around 60%) of the total VAS revenue goes into the kitty of the service providers, the development of this segment is likely to offer them an opportunity to support their falling revenue. With the implementation of mobile number portability, service providers are expected to constantly develop new VAS as a service differentiator and retain their existing customers and attract new ones. Though value added services may be a key strategy for telecom companies, but according to experts, “realising the benefits of 3G would take time and would start showing up post 2013 only.” Abhishek Chauhan, telecom analyst at Frost & Sullivan says, “to experience quality VAS on 3G, quality 3G services are needed. This would definitely take some time, at least 2-3 years.”
But with 3G subscribers expected to reach 142 million in 2015, operators who move slowly on this front will likely lose out big time. Thankfully, leading operators are quickly getting on to the game. In a bid to get more users to try the next generation 3G services telecom operators are now offering better cost-effective deals to the masses.
Going forward, 3G spectrum is expected to attract major investments and open new growth avenues for the telecom sector. However, the past few months have seen a sharp decrease in capex by operators because more and more monies are now required for various “levies”. According to a report by Crisil Research, investments in telecom have been affected by the lack of policy clarity and, in some cases, stretched financials of companies after the acquisition of 3G / BWA licences. In fact, the unclarity on major policy issues has spooked the industry like never before. Take, for instance, the issue of refarming and mortgaging of the spectrum. Rajan Mathews, Director General, Cellular Operators Association of India, opines, “Refarming, as proposed by the Government, is largely akin to “redistribution” and it is founded on flimsy grounds. The entire restructuring of an efficient network by ripping off the existing infrastructure, disconnecting the connected and then deploying an infrastructure that is more demanding in terms of capital, space and construction does not make any sense or benefits the industry or consumers.”
Quite a few issues have remained unsolved between the government and service providers. These include matters related to restrictions on interconnects between own systems and networks across service areas, eligibility criteria and tenure of licence period, the USO fund, as well as various spectrum related issues. As a result of this policy muddle, operators have been forced to shut down networks. Recently, Uninor shut down its operations in Mumbai, which left 1.8 million of its users stranded. In Kerala three operators – Aircel, Telenor and Videocon – have shut down their networks. It’s not surprising that investor rating agency Fitch has noted recently that regulatory risks such as such as an one-time charge for excess spectrum, spectrum re-farming and imposition of high spectrum renewal fees are high for the Indian telecom industry compared with other markets in Asia-Pacific.
India’s telecom sector still has great potential to contribute to the country’s growth ands prosperity. But the government needs to jettison its ambiguous policies and draw out a fresh blueprint for the industry’s growth. That will put the wind back in the sails of the telecom industry.


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As of Covenant v0.4, Covenant provides options that allow developers to integrate custom C2 communication protocols into an operation within Covenant.
This post provides a guide for Listener development, introduces the new C2Bridge project, and describes how C2Bridges can be used within Covenant.
For C2 (Command and Control), we require some communication protocol with which implants can interact with an attacker-controlled server to receive taskings and report back the results of issued commands. There is nearly an infinite amount of protocols we could use to accomplish this communication, but not all of them are convenient or common enough to blend into target environments.
Covenant officially supports only a single communication protocol: HTTP.
There are many benefits to using HTTP for this implant to server communication. HTTP is a ubiquitous protocol that is likely to blend into many target environments. Domain Fronting can be utilized via HTTP, allowing us to utilize high trust domain names. HTTP is high-throughput and low latency, allowing us to quickly transfer large amounts of data between the server and an implant. For these reasons, many C2 frameworks make use of the HTTP protocol for its primary communication protocol.
But there are also drawbacks to using the HTTP protocol. For example, Covenant’s HTTP listener requires a Grunt implant to continuously poll the server to check for new taskings, even while there are none.
This consistent, unnecessary traffic is not always desirable. Many C2 frameworks have a similar drawback with their own HTTP implementation.
There really is no reason that Covenant should need to constrain us to this one communication protocol. As long as you are able to transfer data to and from an implant on a remote network, Covenant should ideally be agnostic to the communication protocol that accomplishes this data transfer.
So while Covenant only includes the one built-in protocol for now, it provides developers with the tools necessary to integrate custom communication protocols into the platform.
Covenant now supports two primary features for integrating new communication protocols:
- Listeners - Listeners can be created from within the Covenant interface and are built-in to Covenant directly. You may already be familiar with Listeners if you have used the Covenant platform before.
- C2Bridges - C2Bridges are a new feature that are developed outside of the Covenant platform entirely.
Creating New Listeners
If a developer would like to create a new first-class listener that integrates with the Covenant interface or if they would like to contribute a communication protocol to the Covenant project as a built-in listener, they should choose to create a Listener rather than a C2Bridge.
Creating a Listener requires that the developer write their communication protocol logic in C# within the Covenant project, and that they write a class that inherits from the
Listener class within Covenant. The developer will have to make some minor edits to the Covenant backend code to accomplish this. The developer will also need to make some changes to Covenant’s front-end code so that users can visually interact with and create new Listeners that use the new communication protocol.
When developing a new communication protocol, a developer needs to handle:
- Listener-side development
- Implant-side development
This is true for both Listeners and C2Bridges. Each side of the protocol needs to know how to “speak” the new protocol.
As of Covenant v0.4, the development of new listeners is much easier than before. Listeners only need to implement a mechanism to read data from implants and write data back to implants. All of the details for interpreting the data returned from implants is handled by Covenant itself, listeners do not need to handle this.
For example, the existing relevant HTTP listener code is only a handful of lines of code (though it does make use of ASP.NET Core to offload development):
Let’s take a quick look at the
Post() function in particular. This is the function that gets called each time an implant writes data to the HTTP listener. Whenever an implant writes data, the listener is responsible for:
- Determining which implant this data is from. The Listener determines which implant is posting data by using the
GetGuid()helper function, which parses the HTTP request and locates the Grunt GUID value within the data by using the configured location within the
- Retrieving the actual data from within the larger message. Profiles determine where the data is placed within an HTTP message. This allows us to create benign looking HTTP messages that our data is hidden within. The Listener is responsible for extracting the data from within the message, using the
Profileto parse out this information. This is done within the
Post()method with the
- Writing the extracted data to an
InternalListenerobject will interpret messages from implants, so that the listener doesn’t have to. The
Post()methods calls the
InternalListener.Write()method to forward the extracted message to Covenant, which will handle everything that needs to happen when an implant returns data.
- The Listener needs to craft a response to send to the implant. If there are any available tasks for the implant, this is where the Listener can inform the implant of these tasks. Listeners do not need to track available tasks, the
InternalListenerobject again will handle this for us. Calling the
InternalListener.Read()method will retrieve any data that is available for the implant.
- Finally, the Listener needs to format this data into the format that the Profile requires. The HTTP Listener accomplishes this with the
Front End Development
In addition to the logic that powers the Listener, Covenant’s front-end should be modified so that the new Listener is easy to create and interact with.
Developers should follow the examples of the
BridgeListener classes to get an understanding of the front-end code that needs to be added. Specifically, developers should add the listener to the list in the Create.cshtml view.
Once this is done correctly, your new Listener should appear in a new tab next to the
Secondly, a developer must write a new implant that utilizes the new communication protocol to receive new taskings. Developers can make use of the majority of the code from existing implants, but must replace the relevant code for an implant to utilize the new protocol.
To do so, a developer can create a new
ImplantTemplate. It is relatively easy to create a new
ImplantTemplate through the Covenant interface. Navigating to the “Templates” navigation page will display a table of the existing implants:
The built-in templates are GruntHTTP and GruntSMB, which utilize the HTTP and SMB communication protocols respectively. When it comes to listeners, we are only concerned with outbound protocols (i.e. protocols that traverse the external edge of the network), not peer-to-peer protocols such as SMB.
To create a new
ImplantTemplate, we can click the “Create” button underneath the table.
Here, we can place the C# code of our new implant that utilizes our new communication protocol. We must specify the code for the stager as well as the full implant. Much of this code can be copied from existing implants, and we can simply replace the portion of the code that handles communication with the listener.
Once, we’ve created the new
ImplantTemplate, we can see that it appears within the table:
The benefit of creating a Listener is that you can provide users with an intuitive interface to provide options needed for the Listener to function and everything is tied into Covenant’s natural workflow. The drawback is the extra development work needed to edit Covenant’s backend and frontend codebase.
C2Bridges are a new feature introduced in Covenant v0.4. The C2Bridge feature is meant to allow a developer to quickly create new communication protocols without having to edit any Covenant code at all, and quickly make use of their creation within Covenant.
Again, just as with Listeners, a developer needs to handle both the implant-side of development as well as the listener-side.
Covenant contains a built-in “Listener” called a
BridgeListener that facilitates plugging a new protocol into the Covenant platform. A
BridgeListener is a simple TCP listener that should be used as a means to transfer data between the new C2Bridge and Covenant.
Developers can use the new C2Bridge project as a template for creating new C2Bridges. This is not a requirement, but the C2Bridge project provides helpful functionality to connect your new protocol to a
BridgeListener without any additional work.
Within the C2Bridge project, there is an abstract
C2Bridge class. A developer can inherit from this class and implement the needed functions to read and write from implants to the
BridgeListener using the new chosen communication protocol.
C2Bridge class is well-documented to make it as easy as possible for developers. The entire purpose of the C2Bridges project is to allow developers to focus on developing their new communication protocol, while focusing on Covenant integration as little as possible.
The C2Bridges project also provides an example
TcpC2Bridge class that inherits from the
C2Bridge class that demonstrates how to develop a C2Bridge. The
TcpC2Bridge provides a new outbound communication protocol that utilizes TCP for C2. An outbound TCP C2 protocol probably has limited usefulness in a real offensive operation, but this is available primarily as an example of how to create a C2Bridge.
TcpC2Bridge shows how to construct a C2Bridge:
RunAsync() function, we start our
TcpListener and continually wait for new clients. For every client, we continually read data from the implant and write that data to Covenant using the
WriteToConnector() helper function that handles this for us.
OnReadBridge() function handles when Covenant is writing data back down to the implant. Whenever, we read data from the “bridge” (Covenant), this function gets called. When this happens, we determine which implant this data is for and write it down to the corresponding implant
To use this
TcpC2Bridge within Covenant, we first need to create a
BridgeListener within Covenant. To do so, we first navigate to the Listeners navigation page:
We then click on the “Create” button and click on the BridgeListener tab at the top of the screen:
The following options will need to be configured when creating the
- Name - The
Nameof the listener that will be used throughout the interface. Pick something recognizable!
- BindAddress - The
BindAddressis the local ip address that the listener will bind to. This can be helpful in cases where the Covenant host has multiple NICs. Usually, this value will be
- BindPort - The
BindPortis the local port that the listener will bind to. This is the port that the C2Bridge will connect to.
- ConnectPort - The
ConnectPortis the callback port that Grunts will be directly connecting to. This is the port the C2Bridge should listen on. This may or may not be relevant depending upon the protocol used by the C2Bridge.
- ConnectAddress - The
ConnectAddressis the callback address that Grunts will be directly connecting to. This should be the external address of the C2Bridge, or if you are using redirectors this should be the address that points to the external redirector.
- BridgeProfile - The
BridgeProfiledetermines the behavior of Grunt and Listener communication. The profile must specify BridgeMessengerCode that is compatible with the C2Bridge you choose to use.
You’ll notice that a
BridgeProfile is required to create a
BridgeProfile is similar to the
HttpProfile you may be familiar with already. It allows us to configure what our network traffic looks like on the wire, and specify where the data should be stored within the protocol.
BridgeProfile has one unique feature not found in the
HttpProfile, it requires a
BridgeMessengerCode property. This property allows us to specify the implant code used to communicate with our new C2Bridge. When we created the C2Bridge, we defined a “listener” that implants can communicate with for C2, but the implant must also know how to communicate over this new protocol.
Some C2 frameworks attempt to solve this problem with an intermediate agent that sits between the implant and the listener that translates messages to the new protocol.
However, this solutions has its drawbacks. This requires us to run a secondary agent for each implant, and we aren’t able to utilize our new protocol between the implant and the translation agent.
Covenant solves this problem slightly differently. In Covenant, the new communication code gets embedded within the implant itself. This requires less overhead than the translation agent approach, and does not require an additional agent to be executed within the target network.
This new communication code is what is specified in the
BridgeMessengerCode property of the
BridgeProfile. For example, the
BridgeMessengerCode for the
TcpBridgeProfile is as follows:
BridgeProfile must include the unmodified
IMessenger interface, as well as a
BridgeMessenger class that inherits from this interface. The
BridgeMessenger should implement all of the code to read and write data to and from the C2Bridge.
Once again, the TCP example here is meant to serve as a guide to developers wanting to develop their own protocol, not necessarily as something to use within an operation.
As an operator, it’s easy to fall into a trap of always defaulting to a standard polling HTTP protocol. There’s nothing wrong with using an HTTP communication protocol, it can be highly effective, but there are many other options out there to consider.
Mixing up the protocols you use as an operator could be eye-opening and beneficial to your blue team. While Covenant does not provide many communication protocols out of the box, it provides the tools that enable the integration of any communication protocol you could want to use.
For example, you could implement a DNS C2Bridge, C2Bridges that integrate with 3rd party websites such as Twitter, Github, Slack, and Dropbox, or get more creative with Amazon SQS, Amazon S3 buckets, or Microsoft Outlook. The only limit is your imagination and a bit of development time!
- Flying a False Flag: Advanced C2, Trust Conflicts, and Domain Takeover - Nick Landers - I would highly recommend this 2019 Blackhat talk to anyone looking for some creative ideas for new communication protocols.
- C3 (Custom Command and Control) - C3 is a platform-agnostic toolset that attempts to solve a similar problem.


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