[CQ-Contest] Stubs are not a joke

Scott Robbins srobbins at usit.net
Tue Jul 1 23:37:33 EDT 1997

I have been doing some work on a SO2R contest station and have only
recently come to the question of using band stubs for nulling out
unwanted signals.  I have noted that at 500 watts I don't really have
a problem, but at 1500 watts it starts to present a little bit of a
dilemma on a few band (but not all) combinations.

I understand the generalities of using stubs, but this is one question
I don't know the answer to:  is right at the output of the amplifier
the only spot the stub is useful/usable?  I use a couple of mono-
banders on a remote coax switch that could easily have stubs on T
connectors added at the switch.  I have seen nothing to indicate this
is indeed possible, but wanted to inquire with the thought pool
here first.  

--Scott, W4PA 

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"If you understood everything I said, you'd be me" - Miles Davis

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