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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 ...
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.
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.
This article provides a list of commercially available software-defined radio receivers. Name Unit cost (2024) Type Production status Frequency range Max bandwidth RX ADC
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.
Fldigi (short for Fast light digital) [4] is a free and open-source program which allows an ordinary computer's sound card to be used as a simple two-way data modem.The software is mostly used by amateur radio operators who connect the microphone and headphone connections of an amateur radio SSB or FM transceiver to the computer's headphone and microphone connections, respectively.
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.
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.