[Hallicrafters] HT-40 question

[Jim Liles]

Hi Les:
If memory serves me correctly --- The later models of the HT-40 had an over 
modulation detector on the front panel which was a neon indicator.  The 
original owner may have added the circuit --- but why under the chassis???


Original message:

Message: 9
Date: Fri, 5 Jun 2009 00:45:00 -0500
From: "Leslie Hock" <lhock at comcast.net>
Subject: [Hallicrafters] HT-40 question
To: <hallicrafters at mailman.qth.net>
Message-ID: <20090605054459.0DAB13738B3E at mailman.qth.net>
Content-Type: text/plain; charset="US-ASCII"

Good evening folks,
I have a question about the HT-40.  I have just purchased one and
the seller wrote me the following:

"The transmitter lost power after a few dits and dahs.  The tubes all check
out 100% and no pooped caps.  I traced it to a small neon bulb under the
chasis that they use as a regulator.  One of the hair-thin leads broke at
the bulb.  I tryed to solder, but no go. You will see this bulb in the
wiring sk and parts list. You would need to replace it.  Very small $ item.
Prior to that it had a good 45 watts out on cw."

I don't have the radio yet but I'd like to get the replacement part as soon
as possible.

I can't seem to find a parts list for the HT-40.  Does anyone have an idea
as to what the bulb is that he is referring to? I don't believe it is one of
the two LEDs on the front but I just don't know. The HT-40 was my first rig
as a teenager and now that I've turned 60, I'm trying to recreate my old
station.  I don't remember seeing a bulb under the chassis but then I was
really looking back then.

If anyone has a part number and/or a source for these bulbs, I would really
appreciate the information.

Thank you,
Les Hock
WB5JWI