Radio Works baluns are very overrated and their quality control basically
sucks! I wouldnt use one that's rated for less than several KW running
legal. I'm 1 for 3 with them so far and the one that is left is a 4 kw
version that is huge and has only been up about 2 months (it was in my
stockpile, so I used it :)
73, Ty K3MM
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cc: (bcc: Tyler G Stewart/BENN/CEC)
Subject: [TowerTalk] Fwd: Baluns
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From: "Walter Kornienko" <zak@goes.com>
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Hi Dave,
I have had good success with the Radioworks 1:1 baluns here. I
use the
5KW version, not for power handling capability, but because it
would best
handle a high SWR. I use the balun on ALL my beams and have not
had
any failures, some being up for over 5 years.
73 de
Walt Kornienko - K2WK - zak@goes.com
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From: "Dave Hawes" <n3rd@ix.netcom.com>
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Date: Tue, 3 Feb 1998 03:37:14 -0400
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Subject: [TowerTalk] (Fwd) 402CD - Does it need a balun?
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n3rd@ix.netcom.com
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Didn't see my post reflected back to me, so I'll try it again.
------- Forwarded Message Follows -------
Today, I took advantage of the
unseasonably warm weather we're having
here in the Philadelphia area, and
took down my 402CD. Something
electrical had gone wrong, and I suspected
that a loading coil had
opened up. I was prepared to do the QHS machine
screw replacement
routine for the sheet metal screws, although before
putting it up, I
had replaced the plated screws with stainless.
Well, it
wasn't the loading coils, but the balun, a W2DU current
balun. It was
reading a very high NEGATIVE resistance on my Fluke 77
(can anybody tell me
why it was NEGATIVE?), so I figured it was
history, and took a hacksaw to
it. When I cut the top off, a whole
lot of BROWN WATER came out. Upon
inspection, I could find absolutely
no way for water to get either in or
out of the balun, save for the
center pin on the UHF connector. The
failure was the wire had
corroded and was nearly broken off on the center
conductor connection
to the solder lug on the inside of the balun tube.
So, can anybody recommend a good current balun to use with the 402CD,
or is
one even needed? Why can't I just follow the directions in the
manual and
make a coil of coax?
I have NEVER used a balun of any type here before
this W2DU, and I'm
batting 0 for 1. Advice appreciated. I'd like to put
the thing back
up next weekend.
Thanks for any help.
73 - Dave N3RD
n3rd@ix.netcom.com
http://www.QTH.com/topten
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