I have an AC-4 that I have updated with The Heathkit Shop's AC-4R kit and I
have used it with a TR-3 and T-4XC (still use on the T-4XC) with no problems. I
would look into a bad modification or repair done on the T-4XC. Any AC-4 will
work on any TR or T-4 unless something bad was done to one of them.
73,Bob WW3QB
From: "fo...@comcast.net" <fo...@comcast.net>
To: drakelist@zerobeat.net
Sent: Sunday, May 8, 2016 5:29 PM
Subject: [Drakelist] AC4 query
I have two AC4s that I have modified with the upgrade kit from:
http://www.sunlightenergysystems.com/theheathkitshop/page4/index.html
One supply has the old 2 prong AC plug (#1), the other a modern 3 prong
plug(#2). Both work FB with a TR4, but neither work with a T-4XC. I was under
the impression that any AC4 would work with either. With AC4 #1, when I connect
the Jones plug to the T-4XC, then insert the AC plug in the wall, the CB for
that circuit immediately pops (this happens with the power on switch on the TX
in the OFF position). With AC4#2, the TX powers up OK, filaments light but the
TX does nothing, cannot set the idle current (no meter reading) no meter
indications in any tune mode or RF on an external wattmeter. The main question
then, is the power connector wiring on the TX different from the TR? Remember,
both these supplies work FB on a TR4. Any thoughts?Barry - W1HFN
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