[Antennas] Regarding WARC beam question

[GM]

Dear All,

Thanks for all the good infos received from Dave-W4DN, Dale-KG5U, and 
Don-K5MUF.
I will put together the whole antenna over the next couple of weeks and 
check the overall SWR curve, in both WARC bands.
That will be the final confirmation regarding the tuning frequencies of 
these traps.

Will report back after performing the above test with the beam pointing 
vertical towards the sky.

Best 73,
                     George N2GM

-------- Original Message --------
Subject: 	WARC beam question
Date: 	Mon, 17 Jun 2013 20:07:53 -0400
From: 	GM <geomain at verizon.net>
To: 	antennas at qth.net



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