Topband: a meaningful test ?

Neil Carr G0JHC g0jhc at
Mon Oct 22 02:40:26 EDT 2007

I want to quickly determine if my TX ant is coupling noise into my rx ant(s)
they are all rather close.


I devised a simple test .. fitting a two way switch on the tx ant  one side
of it shorted. I then checked the noise floor on the rx ants  with the
switch in both positions, ie, with a resonant TX ant in position 1 and a
dead short in position 2, No difference at all.


Was this a meaningful test or have I missed something?


Neil G0JHC


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