A community for discussing Radio Frequency (RF) technology, antennas, and software-defined radios (SDRs) in the context of Linux and open-source software.
We are a subcommunity of the All Things Linux community. We are comprised of hobbyists who like to tinker with Radio Frequency (RF) technology. We discuss everything from antennas to software-defined radios (SDRs) and more.
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While the world of RF can seem daunting with specialized equipment, getting your feet wet doesn't require a hefty investment. You can start exploring the radio spectrum with a surprisingly affordable RTL-SDR dongle (often less than $30!) and a simple piece of wire for an antenna.
Even before spending a dime, you can tune into global radio signals using one of the many online SDRs (WebSDRs). These are receivers shared by other hobbyists, accessible right from your web browser, offering a fantastic way to discover what's out there. Many fascinating signals, like those from aircraft or local repeaters, can be picked up with very basic setups.
Almost every electronic device uses (or unintentionally emits) RF signals. There are hundreds of different types of RF signals, all with their own unique properties and uses. Because of this you can find radio signals anywhere, from your room to even places in nature! One of the first things that may pop into your mind is hacking (NOTE: if you want to discuss this please view the rule about this by clicking this), but there are a HUGE amount of other interesting applications for RF technology!
DISCLAIMER: Depending on your country, some of these applications may be illegal or require a license to operate. Please check your local laws before operating any RF equipment. We tried to make sure examples in this list will be *generally* legal, but we cannot guarantee it.
A very small subset of examples include:
Developers
Craft software to decode signals, automate radio tasks, or build custom RF tools.
Astonomy
Listen to satellites, capture images from weather spacecraft, or learn about radio astronomy.
Tinkerers
Build your own antennas, modify existing hardware, or create custom RF projects.
Explorers
Hunt for distant or unusual signals, and explore the radio spectrum.
Conversationalists (theres probably a better word for this)
Talk/listen to people countries away, even from across the world!
Can't find something, feel free to ask. We are always happy to help people find what they are looking for!
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