A collection of the best free and open source hamradio projects!
Web based amateur radio logging application built using PHP & MySQL supports general station logging tasks from HF to Microwave with supporting applications to support CAT control.
We want to show the wider radio community that we are proud of who we are! We want to demonstrate and promote acceptance within the hobby! Pride Radio Group is a virtual radio club set up for those that share our values. Whether you have an amateur radio license, use a CB radio, or are still studying for your exam - you’re welcome in our community.
This is a modification of the original firmware for the "Frequency Counter with a PIC and minimum hardware" created by Wolfgang "Wolf" Büscher, DL4YHF.
Derivatives of Wolf's design are sold on Ebay and other sides in kit form, usually adding a crystal test circuit but otherwise using Wolf's exact design and firmware for the counter part (Wolf is aware of these "clones" but doesn't mind as long as "those kits are offered for a fair price").
This is for those PIC 16F628 kits.
The homepage of a relatively simple microcontroller-based frequency counter. This design is common to just about all of the kits that you'll find on eBay or Amazon (you know the ones - they don't have any instructions). Usually you'll be looking up construction variant 2 (five digit display) with a 20MHz crystal.
Designed by Wolfgang "Wolf" Büscher, DL4YHF.
Microcontroller used: PIC 16F628
A tool to converts images to IQ streams that are visible when viewed in a waterfall plot.
Radio equipment dealer. Personal and business-related radio equipment for sale, new. Also, shortwave receivers, scanners, software-defined radios, radio accessories and stuff for kids.
This non-interactive application allows automatic reporting of WSPR spots on WSPRnet. The idea is to allow the use of small computer like RaspberryPi or Beaglebone boards, with a simple daemon. This kind of very lightweight setup could run continuously without maintenance and help to increase the WSPR network. The code is massively based on Steven Franke (K9AN) implementation and Joe Taylor (K1JT) work. This code was originally written for AirSpy receiver.
How to build your own programming cable for Leixen ham radios (the VV-898 in particular).
A web application (personal and otherwise) for tracking high altitude balloons, radiosonde beacons, and so forth on a world map. Desktop and mobile friendly.
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!
An AX.25 packet radio chat protocol with support for digital signatures and binary compression. Like IRC over radio. Note that, because encrypted messages are illegal on ham bands, messages are signed to prevent spoofing but are not encrypted. Requires a TNC to send AX.25 - Direwolf is recommended.
If you're at a security conference, and you've got a ham radio license (of any class), grab your radio and set it to 146.580 simplex (no offset).
Catalog page for a simplex repeater unit that you plug a radio into.
Radio hams and techies in Maryland, Virginia, and DC get together to throw a flea market for geeks. Bring cash.
Not really a service manual but a small website on the HTX-200 hand-held shortwave transceiver from Radio Shack.
A Frequently Asked Questions file about phonetic alphabets. Covers the phonetic alphabets of multiple countries and military forces.
How to turn an ordinary retractable measuring tape into a directional VHF antenna (tm). Good for direction finding.
A worldwide volunteer system of radio hams who provide limited net.access during emergencies so that people can communicate.
The database of radio scanner frequencies at radioreference.com. Curious about what's happening in your area? Tune in and give a listen.