I am probably depending on the same source that Bob used to suggest that a choke can work both ways...right or wrong, do good things or do bad things.
I heard it said that a 1:1 coaxial choke has no ill-effects on the feed line matching. I believe that is only true as long as the feed line length does not change when adding the choke, and the antenna match is close to or equal a perfect match. This is not all, but it will do for this discussion I think.
I've also heard some users say something similar to the following: "...even if I don't need a choke it won't matter. Just in case, I'll install anyway...it doesn't ill-effect the antenna."
Somebody please explain to me any sensible reasoning with such a statement in light of what Bob has noted above.
The only issue I have with Bob's first comments are, I've never experienced anything similar to his results, and for sure have not seen and increase in signals.
One time I did think I heard some reduced noise on my Sigma4 after adding a choke to my feed line, but I could not be sure. I was not able to make the switch fast enough to really know for sure, plus sometimes around my location we see the band stretch out before our very eyes.
Another thing I noticed on that same experiment was that the resonance changed, because my antenna match was not match well enough to be near perfect, and I experienced feed line transformation. That is a situation that you might miss if you're not watching close...even when using an analyzer.
How about some comments from others on your results if you've experimented with a coaxial choke of some type.
