[CQ-Contest] Basic SO2R ?

[Leigh S. Jones, KR6X]

Most station combinations used to simultaneously listen and transmit will use at least some additional filters to reduce cross-band interference.  Long years of experience at the under-100-w levels on Field Day suggest that it isn't enough to count on horizon vs. vertical polarization to reduce signal.  Filters provide easily 30 decibels of additional attenuation and are important to your results.

Leigh S. Jones, KR6X

> On Nov 15, 2013, at 9:50, Dirk Hacker <dirk.hacker at yahoo.com> wrote:
> 
> I'm new to this email group...
> 
> Can I start SO2R contesting...with no major problems...with only >>
> 
> - 2 CAT controlled Radios
> - dipole ants (rig #1)
> - multiband vertical (rig#2)
> - DX doubler (audio controller)
> - low power...under 200 watts
> 
> How can I make sure I don't fry the Rx front end(s) ?
> If I add soft rock SDR to monitor "band openings"...how make sure I don't fry soft rock rcvr as well ?
> 
> I believe dipole & vertical with 
> no-coupling is ok. 
> (Horizontal vs. vertical polarization)
> I don't believe band-pass filters are a must until power is 500 watts or more (?)
> 
> Thanks for any practical advice/inputs.
> 
> Dirk H -N7QP
> 
> Sent from my iPhone
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