Later in the Seven Cows series the characters are going to install a pirate radio station. This is illegal but the authorities are pinned down with other problems. Ideally, this station would be able to reach out ten or fifteen miles in the cardinal compass directions.
I know just a tiny bit about radios and radio waves. Tiny, tiny bit.
I suspect that I have readers who could whip off a functional concept while eating their Rice Crispies.
A few questions:
Which band? GMRS? Ham? CB? AM? FM? The FCC restricts "unlicensed" AM and FM stations to a transmission range of a few hundred meters.
The FCC also puts a minimum power requirement for licensed stations, I think 250W for AM and 100W for FM.
If something like GMRS what is the practicality of duplex repeaters on utility poles? Would they work by shifting privacy codes such that a listener could listen to channel xy and try privacy codes 13, 14 or 15 to find the best signal for their location?
If GMRS, what channels are least heavily used?
If GMRS, would the "network" also be able to function as two-way communication whereby one small patch of civilization can call for mutual aid?
If AM or FM, how much power would be required to transmit five miles? How about ten miles?
What questions am I not smart enough to ask but should be asking?