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2. FT8 - Wikipedia

   en.wikipedia.org/wiki/FT8

   A waterfall display showing FT8 in use on the 40-meter band.. FT8 (short for Franke-Taylor design, 8-FSK modulation) is a frequency shift keying digital mode of radio communication used by amateur radio operators worldwide.

3. Parallel Logic Radio Interface - Wikipedia

   en.wikipedia.org/wiki/Parallel_Logic_Radio_Interface

   The circuit shown below is the Deluxe PLRI interface, and is used to connect a radio to a PC using a parallel port and sound card. This circuit is fully compatible with the Version 3 IRLP board, and can be used in place of an IRLP board. This circuit allows negative or positive COS from the radio, and also supports negative or positive PTT keying.

4. Terminal node controller - Wikipedia

   en.wikipedia.org/wiki/Terminal_node_controller

   A terminal node controller (TNC) is a device used by amateur radio operators to participate in AX.25 packet radio networks. It is similar in function to the Packet Assembler/Disassemblers used on X.25 networks, with the addition of a modem to convert baseband digital signals to audio tones. [1]

5. Category:Digital amateur radio - Wikipedia

   en.wikipedia.org/wiki/Category:Digital_amateur_radio

   Pages in category "Digital amateur radio" The following 20 pages are in this category, out of 20 total. ... Parallel Logic Radio Interface; R. Radioteletype

6. List of amateur radio modes - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio_modes

   Most amateur digital modes are transmitted by inserting audio into the microphone input of a radio and using an analog scheme, such as amplitude modulation (AM), frequency modulation (FM), or single-sideband modulation (SSB). Amateur teleprinting over radio (AMTOR) D-STAR (Digital Data) a high speed (128 kbit/s), data-only mode.

7. M17 (amateur radio) - Wikipedia

   en.wikipedia.org/wiki/M17_(amateur_radio)

   A local amateur radio club he was a member of, was involved in digital voice communications. Kaczmarski, having experimented with TETRA and DMR , decided to create a completely non-proprietary protocol and named it after the club's street address - Mokotowska 17.

8. The Internet Archive is building a library of amateur radio ...

   www.aol.com/news/internet-archive-digital...

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9. OpenHPSDR - Wikipedia

   en.wikipedia.org/wiki/OpenHPSDR

   The OpenHPSDR (High Performance Software Defined Radio) project dates from 2005 when Phil Covington, Phil Harman, and Bill Tracey combined their separate projects to form the HPSDR group. [1] It is built around a modular concept which encourages experimentation with new techniques and devices (e.g. SDR , Envelope Elimination and Restoration ...