[TowerTalk] remote switching for balanced lines - homebrew plan

[Roger (K8RI)]

n8de at thepoint.net wrote:
> Your balanced feedline can also serve as your control lines.
>
> With no voltage on the lines, one pair of wires is selected.
> With +V on the lines, one of the relays is energized
> With -V on the lines, the other relay is energized.
>   
Just don't switch open frame relays carrying high voltage under load.
> Use good quality RFC on both sides of the line at the shack and  
> antenna and you shouldn't have any problems.
>   
RFC = RF Chokes? At least that's what it means to me.

73

Roger (K8RI)