[TowerTalk] A3S tribander gone bad

[n4zkf]

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 at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of TexasRF at aol.com
Sent: Monday, November 15, 2010 7:48 AM
To: rob.katz at thelegacycenter.com; towertalk at 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 at 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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