[CQ-Contest] SO2R Coax Stub location; outside?

[Jim Brown]

On 2/23/2020 11:49 AM, wc1m73 at gmail.com wrote:
> Can anyone confirm that stubs work best 1/4-wave from the transmitter?

That's a serious oversimplification. Here's the detailed answer. It ran 
in NCJ a few years ago.

http://k9yc.com/LocatingStubs.pdf

And here are slides for a "big picture" overview talk I gave at Visalia 
last spring.

http://k9yc.com/Multi-Station.pdf

The executive summary: spacing between stub and output stage always 
matters, and what's best depends on the output network. Spacing between 
stub and antenna matters IF the antenna is NOT resonant on the harmonic, 
but does NOT matter if the antenna IS resonant on the harmonic. And two 
stubs, 1/4 wave apart at the harmonic frequency is much better than a 
single stub.

73, Jim K9YC