[CQ-Contest] Bandpass Filters

David Pruett k8cc at comcast.net
Fri Oct 19 21:55:25 EDT 2007


Philip Leonard WVØT wrote:
> Dunestar or ICE or ????
>
> Which do you use and/or recommend for SO2R?
>
> Thanks, Philip WV0T
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>   
Both are OK (I have samples of both) but W3NQN's provide the best 
performance.

The biggest question you have to deal with is how to switch them, and 
this is predicated on your amplifier and antenna arrangements.  The 
Dunestar 6-bander is tremendously cool from the all-band switching 
standpoint, but I've heard of cases (certainly not universal) of 
excessive insertion loss leading to component failure.  Also, their 
performance deteriorates rapidly about 3850 KHz on 75M phone.

Dave/K8CC




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