[CQ-Contest] SO2R - How Good is Good Enough?

Tonno Vahk tonno.vahk at mail.ee
Wed Dec 7 11:33:13 EST 2005

Pete, harmonic should not be more than a usual station in my opinion. My 
harmonics are down to less than 59 level on most of the bands and can easily 
work a few KHz from them or even on them! Don't hear anything from it at 
least 5 KHz from harmonic, usually the border is closer.

I have full sets of excellent W3NQN 200w filters on both radios and 2KW 
W3NQN filters on 20m and 40m antennas after amplifier. Those are the most 
problematic bands (40 to 20 and to 15; 20 to 10).

I use extra coaxial stubs if needed after amplifier.


----- Original Message ----- 
From: "Pete Smith" <n4zr at contesting.com>
To: <cq-contest at contesting.com>
Sent: Wednesday, December 07, 2005 9:13 AM
Subject: [CQ-Contest] SO2R - How Good is Good Enough?

> I've just spent a lot of effort, and probably too much money, on antenna 
> switching and filtering for SO2R.  The resulting system seems to work 
> quite well, at least at 100 watt power levels, but I realized I don't have 
> a good sense of what experienced SO2R ops and station builders consider to 
> be "good enough."  In particular, how close to the harmonics of your 
> transmitter frequency should you be able to listen effectively with the 
> second radio?
> 73, Pete N4ZR
> The World HF Contest Station Database
> was updated on 23 October 2005
> Over 3000 contest stations at
> www.pvrc.org/WCSD/WCSDsearch.htm
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