Yep. When you're trying to get 50-60 dB down, EVERYTHING has to be done
very well. Several years ago, I was not achieving the harmonic
suppression I thought I should, so I bought a spool of BuryFlex (RG8
with a robust copper braid shield) and replaced every piece of coax
inside my shack. I didn't measure the result (not easy to do), but
suppression was 10-15 dB better. Another important component of
minimizing crosstalk is having a good ferrite choke at the feedpoint of
every antenna.
73, Jim K9YC
On 7/9/2018 8:19 PM, Bob McGraw K4TAX wrote:
All this doesn't speak well for the quality of the dummy load or coax jumpers.
Bob, K4TAX
Sent from my iPhone
On Jul 9, 2018, at 10:01 PM, Phil Kane<[email protected]> wrote:
On 7/9/2018 7:12 PM, K8TE wrote:
BTW, I have made a 75m QSO on a dummy load. I think I was using Radio Shack
coax back then (in the 1970's when I worked for the company).
When I lived about three miles away from Mt. San Bruno south of San
Francisco, I routinely worked all of the VHF and UHF repeaters there
using a dummy load! Amazing what a clear eye-ball path can do.
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