Sounds like the traps are in the wrong spot and the only way to tell the
difference is with a grid dip.... Been there, done that....
73 Dave
n4zkf
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of TexasRF@aol.com
Sent: Monday, November 15, 2010 7:48 AM
To: rob.katz@thelegacycenter.com; towertalk@contesting.com
Subject: Re: [TowerTalk] A3S tribander gone bad
Measured where? At the feed point? At the end of XXft of ?? coax?
73/k5gw
In a message dated 11/15/2010 6:33:09 A.M. Central Standard Time,
rob.katz@thelegacycenter.com writes:
I am putting back up a Cushcraft A3S tribander after it was on the ground
for several years. I've cleaned it and rebuilt it, triple checking the
dimensions. Installed at 45 feet, I get the following MFJ 269B readings
for best resonances: 10m - 26.6 MHz, SWR=1.8, R=38, X=33; 15m - 21.55 MHz,
SWR=4.3, R=8, X=21; 20m - 14.95 MHz, SWR=2.9, R=37, X=73.
These resonances are very sharp, and clearly not right. Any ideas on how
to test this? Is there a simple way to test each trap? While I didn't
open up each trap, I did soak them and thoroughly rinse them to try to
clean any any stuff that might have been inside.
Thanks and 73,
Rob, KA1ARB
--
Rob Katz, Director
Legacy Center, Inc.
(919) 678-6000 x106 (919) 678-6015 fax
www.TheLegacyCenter.com
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