[amsat-bb] Low-Power FM (broadcast band) Transmitter?

Jim Walls jim at k6ccc.org
Thu Apr 2 22:04:17 UTC 2020

On 04/02/2020 14:59, Matthew Chambers via AMSAT-BB wrote:
> One of the guys on the other group I belong to brought up how some of the
> drive-in theaters he worked with operated their system. They had a
> transmitter that they hooked up a long run of "leaky" coax to with a 50 ohm
> resistor at the far end. The coax was buried under the field where the cars
> parked and radiated along it's entire length. No one place exceeded Part 15
> limits but the whole area had enough signal to be picked up on all but the
> worst car stereos.

That makes a lot of sense, and it makes it far easier to keep the signal 
inside the fence so outsiders can't watch and listen for free.

Jim Walls - K6CCC
jim at k6ccc.org
Ofc:  818-548-4804
AMSAT Member 32537 - WSWSS Member 395

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