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SDRangel - multiplatform, open-source software defined radio receiver/transmitter; OpenWebRX - web-based software defined radio receiver; mrefd - M17 reflector [22] rpitx - general radio frequency transmitter for Raspberry Pi [23] dsd-fme - digital speech decoder [24] mvoice - voice client and graphical repeater application (Raspberry and Linux ...
For a low-power transmitter you can use Raspberry Pi with unipager [5] and MMDVM-modem [6] installed, and to make the coverage area several miles, a radio amplifier needs to be added to its output. [7] The coverage area of the transmitter can be up to 20 km (12 miles), depending on the terrain and the height of the antenna.
Raspberry Pi as WSPR transmitter. The protocol was designed to test propagation paths on the LF, MF and HF bands. Also used experimentally at VHF and higher frequencies.. Other applications include antenna testing, frequency stability and frequency accuracy checking.
The Icom ID-1 1.3 GHz mobile radio was released in late 2004. The ID-1 was the first D-STAR radio that provided digital data (DD) mode operation. In this mode, data can be transferred at 128 kbit/s as a wireless bridge via the RJ-45 Ethernet jack on the radios. It was the only radio to provide this function until the release of the IC-9700 in 2019.
Homebrew is an amateur radio slang term for home-built, noncommercial radio equipment. [1] Design and construction of equipment from first principles is valued by amateur radio hobbyists, known as "hams", for educational value, and to allow experimentation and development of techniques or levels of performance not readily available as commercial products.
[24] [25] [26] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters, with the exception of the 1.25 meters band, and the "X" model also has built-in 23 centimeters band capability option. Kenwood discontinued production of the TS ...
The TNCs of the 1980s and 1990s were complete solutions that only needed a radio and an optional dumb terminal. As home computers made their way into ham "shacks," there was a movement toward simpler, cheaper "KISS" (Keep It Simple, Stupid) devices. These have a modem and minimal processing of the AX.25 protocol.
The Antique Radio Club of Illinois operates a vintage radio station as a public demonstration at the Antique RadioFest allowing licensed amateurs who visit to operate the transmitter. [29] [30] The Amateur Radio Lighthouse Society and The AM Radio Network's [31] "Expedition to Thomas Point Shoal Lighthouse" in Chesapeake Bay, MD commemorated ...