facedeoderant | 5 years ago | on: Ham radio is not dying, it's evolving
facedeoderant's comments
facedeoderant | 5 years ago | on: Ham radio is not dying, it's evolving
Specifically you're talking about RTL-SDR, a hacked soundcard that can receive a lot of frequencies. The channels you can legally transmit back on for a few hudred dollars more are FRS/GMRS family/business radio channels. (Speaking about USA only here, since that's the only radio location I know about).
tl;dr for the rest of my post: ham radio is the best type of radio for hackers.
Undoubtedly you can have tons of fun with a $30 RTL-SDR and basic antenna, but there are lots of things you can do with ham radio once you grow tired of that, or if you find yourself being interested in how radio works generally, but more fundamentally, you can actually talk to people who are _actively hacking on the same types of things you are_ using projects you've both worked on, maybe together.
Regarding FRS/GMRS walkie talkie frequencies: these are UHF (Ultra High Frequency) frequencies, which means a couple of things: range is limited to well under a mile in most conditions, and building a radio to work on FRS or GMRS would be _possible_, but would require a lot of specialized equipment and maybe an engineering degree. Additionally, power is extremely limited on these radios, so you might be able to transmit back, but you'd better be near the business's parking lot to do so legally. Again, as far as a hobby goes, try breaking in on the Chik Fil A drive-thru attendant's recitation of someone's waffle fry order to ask whether you're coming in clearly on your home-built radio.
Ham radio has a community that's thriving and full of fun for new and/or young modern hackers. You just have to know where to look. For starters, consider Ham Radio Village at DEFCON (https://hamvillage.org) or the online Young Amateur Radio Club (https://yarc.world/) (an inclusive and active club centered around a Discord channel full of people interested in the latest tech in ham radio), or Ham Radio Workbench Podcast (https://twitter.com/HamWorkbench) (a podcast focusing on the latest in ham radio with a focus on new technologies and the intersection with the maker sphere). Hackaday frequently hosts new, fresh takes on ham radio hacking as well.
I think ham radio is back to its roots. With the resources of the modern maker movement, it's possible to learn about radio and hack something together that puts you on the air with people as excited as you are.
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Good to know about FRS and GMRS. Those things just underscore how really limited experimental transmission privileges are without a ham license.
About the Chik-Fil-A thing, that was a silly way to say that even if you do transmit on FRS or GMRS, it's not like there's a community of other experimenters making it fun to do so.