Parallel coax
"John S" wrote in message ...
On 9/25/2015 4:31 PM, Wayne wrote:
I use a short vertical antenna that has a low feedpoint impedance.
Would there be any advantage to running two parallel 50 ohm coax to
reduce losses to the shack tuner?
If your antenna is 25+j0, paralleling two 50 ohm coax lines would reduce
the SWR from 2:1 to 1:1.
Is that what you want to know?
Yes, more or less. But, I wouldn't even bother trying to reduce a 2:1
unless the rig wouldn't tolerate it.
The antenna feedpoint impedance is around 20-j130 at 14 MHz, approximately a
21:1 SWR.
Some years back there was a discussion on paralleled coax, and I seem to
recall that it wasn't considered to accomplish much even under ideal
conditions.
|