[Antennas] WARC beam question

Mon Jun 17 20:07:53 EDT 2013

Hi,
I have a question for the group, maybe somebody can help me out:
I am putting together a Cushcraft A3WS WARC beam, that I had in the 
storage for a while. Before starting to assemble it, I did a quick check 
of the resonance frequency of all the traps (all 6 are the same). I used 
the grid-dip method, recommended while back for other Cushcraft beams, 
like A3/A4.
This method was showing the resonance of the traps slightly below the 
band they are supposed to do the job on!
For the A3WS traps I have dips somewhere between 23.0-23.2Mhz, sort of - 
in pairs - two with two with two.
But these dips are about 1.5Mhz below the 12M bands, seems to me to far 
away from the band!
Does anybody have any experience with these traps and their resonance 
frequencies??
Any feedback will be appreciated.
Best 73,
 George N2GM