[Hallicrafters] HT-33 A

[David Knepper]

Anyone looking for a really clean HT-33B, please contact me.  Asking price
is steep, however, for a really low time amplifier with full output and a
fresh tube.

Thank you.

Dave, W3ST
Secretary to the Collins Radio Association
Publisher of the Collins Journal
www.collinsra.com
----- Original Message -----
From: "Roger(K8RI)" <hallicraftersgroup at rogerhalstead.com>
To: <W4AWM at aol.com>
Cc: <hallicrafters at mailman.qth.net>
Sent: Saturday, November 15, 2003 6:44 PM
Subject: Re: [Hallicrafters] HT-33 A


> Hi John,
>
> I'm not too worried about the PL172s.  There seem to be quite a few around
> although most are probably gassy.  I can get them with a
guarantee/warranty
> but those are expensive.  The 8295A is a direct replacement and a lot of
> PL172s have 8295 stamped on them. However the 8295A is a metal and ceramic
> tube where the PL-172 is metal and glass.  Naturally the 8295As are more
> than twice the cost of a PL172 and that works out to be more than many
> modern legal limit amps.  One commercial supplier of tubes quoted me $1200
> for a PL-172 and $2600 for a fresh, tested, and warranted (30 or 60 days?)
> 8295A.
>
> Here's what my HT-33B looks like inside
> http://www.rogerhalstead.com/boat8.htm
> and the front panel http://www.rogerhalstead.com/boat9.htm
>
> I'm wondering if the 33A uses the same screen voltage as the 33B.  That
> might account for the lower power out. Course a soft tube(s) could do the
> same.  This amp comes with two tubes, but it appears both are weak/soft,
or
> gassy. At least the quoted power is fairly low.
>
> I just saw your "Yet another Look" and I'm going to guess...based on the
> extra holes, the new filament transformer, the appearance of the tan
powder
> (or color) in areas difficult to reach, the appearance of the chassis
around
> the missing tube sockets (it does appear as if there were tube sockets
> mounted there and again emphasizing that lighting can play tricks in
> photographs), the new bleeder resistor on top of the stack, AND the
> repainted cover and "guess" the  filament transformer probably shorted out
> and caused a real mess (fire?).
>
> I'd be surprised if it makes reserve...I'm betting it's either $300, or
$350
> and it looks like too much work for me. I just finished up completely
> rebuilding a Henry 2K4 and I have a really nice looking HT-33B ready for
the
> cabinet. (when the cabinet is ready)  I think I can keep the shop warm by
> taking a break any time it gets chilly and get on 40 meters for a few
> minutes. Man, but that thing throws out a lot of heat.
>
> I'll be putting those two projects on some pages soon.
>
> Roger Halstead (K8RI, EN73 & ARRL Life Member)
> N833R, World's Oldest Debonair? (S# CD-2)
> www.rogerhalstead.com
>
> > Hi Roger,
> >
> > I can't help you on the VR tubes but you should know that the final on
> that
> > rig is a PL-172A.  They are no longer manufactured and very expensive
when
> you
> > find a good one.  Also, as I am sure you are aware, the HT-33 weighs a
ton
> so
> > shipping will be extremely expensive, especially if it is some distance
> from
> > you.
>
>
>
> _______________________________________________
> List Administrator: Duane Fischer, W8DBF **for assistance**
> dfischer at usol.com
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