Topband: Elevated Feedline for RX

[Jon Zaimes AA1K]

  Back in the 1980s at another QTH, in northern Delaware, I had a 
single, half-mile run of mostly hardline and some RG6 feeding three 
Beverages. I piggybacked voltage on the feedline to control relays to 
select the desired antenna (single feedline, two relays, three 
antennas). To compensate for the voltage drop, I supplied around 40 VDC 
at the shack end and had plenty at the antenna end to control the 24 VDC 
relays. Of course if you know or calculate the resistance of the cable, 
you can figure exactly what you need to supply for the distance involved.

73/Jon AA1K

On 9/20/2010 15:12 PM, Craig Clark wrote:
>   But, how
> are you going to get around the issue of voltage drop in a 1500' run?