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5 results tagged transmitter  ✕   ✕
daveake/pico-tracker https://github.com/daveake/pico-tracker
Sun 28 May 2023 07:56:28 PM PDT archive.org

This is a GPS/radio tracker for high altitude balloons. It uses a GPS receiver to determine its position, and a LoRa transceiver to transmit that position to the ground. It is written in C for the Pi Pico microcontroller, using the official C/C++ SDK. The resulting executable code can be downloaded to the Pico using a serial programming/debug cable as described in the Pico C/C++ SDK manual. You will need a means of receiving the telemetry from your tracker. One popular option is the Pi LoRa HAB gateway.

hamradio electronics tracker telemetry transmitter
Tindie: Amateur Radio Module DRA818V https://www.tindie.com/products/dorji_com/ham-amateur-radio-module-dra818v/
Mon 17 Apr 2023 08:12:41 AM PDT archive.org

Frequency Range: 134~174MHz
Tx/Rx frequency independent
Channel space: 12.5/25KHz
CTCSS / CDCSS codes
UART interface
3.3~4.5V

hamradio transmitter modules 2m aprs electronics
coolacid/aprs: Mini-APRS Transmitter https://github.com/coolacid/aprs
Sun 16 Apr 2023 08:08:17 PM PDT archive.org

An electronics project for patching together a small APRS transmitter module. The project is largely obsolete and unmaintained but it's good because it talks about the DRA818V radio module, which is pretty obscure.

project hamradio electronics aprs transmitter
GitHub - F5OEO/rpitx: RF transmitter for Raspberry Pi https://github.com/F5OEO/rpitx
Thu 15 Nov 2018 08:38:44 PM PST archive.org

A general purpose radio frequency transmitter for Raspberry Pi which doesn't require any other hardware unless filter to avoid intererence. It can handle frequencies from 5 KHz up to 1500 MHz. Plug a wire into GPIO pin 4 (hardware pin 7) and it'll broadcast just about whatever you tell it to. Has an installation script. It's recommended that you use a bandpass filter to minimize noise on the air. Works with just about every RasPi (except the B). Has a text based menu to control it. Defaults to 434 MHz (international free ISM band). You can even broadcast spectrogram pictures! Can even do POCSAG to activate pagers!

raspi rf transmitter software hamradio pirate
korn101/PiNumberStation: Pi-based FM Number Station w/ basic Speech Synthesis. https://github.com/korn101/PiNumberStation
Fri 13 Jul 2018 01:35:41 PM PDT archive.org

Pi-based FM Number Station w/ basic Speech Synthesis.

github raspi python c numbersstation rf transmitter
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