[CQ-Contest] SO2R and monoband yagis on the same boom

[Tonno Vahk]

Hi Bill,

YES. I use exactly Optibeam 5 el 20m / 3 el 40m for SO2R. And also for M/2!!
I have had in Multi Op two HP stations TXing/RXing at the same time on the
antenna on two bands and absolutely no problems. I have used W3NQN filters
and now lately also 4O3A HP BPFs to cut further down on harmonics also.

The same way I have used for SO2R and Multi Op separate elements of 3 band 2
element Cubical Quad without problems.

I have found strangely more interference sometimes from separate antennas
even on different towers (especially when looking in direction of each
other) then from interlaced monobanders.

GL es 73
Tonno
ES5TV

-----Original Message-----
From: cq-contest-bounces at contesting.com
[mailto:cq-contest-bounces at contesting.com] On Behalf Of Bill and Cindy
Sent: Sunday, January 18, 2009 10:27 PM
To: cq-contest at contesting.com
Subject: [CQ-Contest] SO2R and monoband yagis on the same boom

I thought I would ask here before risking the front ends of my receivers!
 
Is anyone using the Force 12 or Optibeam combination yagis (monobanders
with seperate feedlines on the same boom) for SO2R? I have an Optibeam
5 el 20m / 3 el 40M, seperate feedlines. The SO2R filters are the ICE
419B's.
Up until now I have been using a multiband vertical when the 20m/40m SO2R
combo is needed, but now I have a 1/4 wave 80M vertical instead and have
to figure out how to do the 20m/40m SO2R combo....
 
Thanks, Bill KO7AA in Tucson 


      
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