CATS is a new communication and telemetry standard intended to surpass the current Automatic Packet Reporting System (APRS) standard by leveraging modern, super-cheap Frequency Shift Keying (FSK) ...

So i've been intersted in packet radio for a while now. anyone know any good site's etc? I was thinking i'd try it out with some public frequencies before going the liscensed way. I just can't seem to ...