Hacker News new | past | comments | ask | show | jobs | submit login

Google "ARRL Band Plan"


I roughly split spectrum in my head as "longer waves" (kHz, AM radio, needs impractically large antennas), "HF" (thousands of miles of range, largish antennas), "VHF/UHF" (line of sight, 25 miles, walkie talkies), and "microwaves" (1GHz+, short range, tiny antennas for wifi).

Someone already mentioned the Baofeng style of cheap Chinese radio. They're good enough but they also produce pretty dirty signals that there's a chance they aren't legally compliant. That being said, everyone seems fascinated with them right now so they get away with it for the moment. I wouldn't let that stop you since if you stick with it, you'll move up soon enough and it'll become the backup/beater radio.

I'll add on that $25 RTL-SDR (get a "TXCO" one like a Nooelec Blue) is also a pretty cheap entry into listening to absolutely everything. With that, you can start making antennas, listening to satellites, running your own FlightAware ADS-B scanner, etc. To listen to HF, you can add a $75 upconverter.

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact