[rickydroll]

Are you thinking of 100mhz (3m)?

Sending data by radio is messy, slow, and generally disappointing. Start your journey by reading up on the Aloha system https://en.wikipedia.org/wiki/ALOHAnet.

[iamnothere]

My apologies, I meant 10m (28 MHz). Brain fart. It’s slow but it’s more than adequate for text, and range is excellent (hundreds of miles).