[R-390] Open Z-503 AGC IF Transformer
tfrobase
tfrobase at kitparts.com
Tue Jan 10 19:45:31 EST 2006
Thank you for the offer, I found one at Fair radio. I pulled one out of a
blue line backup radio, but I want to get it repaired, your correct it is a
bear! Have you ever diagnosed the failure mode, I guess maybe a plate short
on the AGC tube?
________________________________
From: LI WHA HO WALLY [mailto:k5op at yahoo.com]
Sent: Tuesday, January 10, 2006 9:56 AM
To: tfrobase
Subject: Re: [R-390] Open Z-503 AGC IF Transformer
Tom, I have a few new original coils left... I usually get 25 bucks for
them... I have worked on these things for about 25 years... Rewinding them
usually takes about 10 hours.... These coils are high Q... If you use
another coil, your AVC voltage will be real low... If you have looked below
the chassis you will see that replacing this coil is a real bear... About 12
wires to take aloose.. I use a special proceedure that uses only 4 soldered
joints.... 73's Wally k5op
tfrobase <tfrobase at kitparts.com> wrote:
I am looking for a replacement if anyone has one. Pulled it apart
but it is
open somewhere inside the windings, usually it is around the
connections.
Anyway, hoping someone can help. As you know it is not an easy guy
to get
to. ... Tom, N3LLL
Thomas L. Frobase
League City Texas 77573
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