HX-10 Power Transformer

[The Pollacks]

I've had a Marauder for several years, and have had no trouble.  I think
that on these, as on the HT32 and 37 series Hallicrafters, as well as on
perhaps some similar types of transmitters of the era, the full wave 5 volt
rectifiers are a problem, in that the 5 volt coil carries the full HV.  I
have heard that the windings can break down and short, which is why there
are many blown transformers of this type.  (I'm not a real tech type, so I'm
not sure of this)  In any case, on most of my old rigs, which I use
regularly, I replace the 5 volt rectifiers (or 866s) with inexpensive 1KV
1Amp diodes, and, importantly, disconnect the 5 volt windings.

If you come across one with a blown transformer, I have heard of people
using the Heath HP23 power supplies, which supply the appropriate voltages,
at least for the HT32, and installing a suitable connector on the back.  The
Heath supplies are plentiful and inexpensive.  I haven't checked the
requirements for the Marauder, but I think they should be similar.  Perhaps
another filament supply might be needed if the filament requirement is more,
but I think the HV and bias voltages would probably work with little
trouble.  If someone is interested, I can look up the voltages in the
Marauder manual.  I know of 2 people who are using the HP23 with HT32s,
which commonly have blown power transformers.  I have solid stated my HT32,
and no problem.

Ron K2RP

-----Original Message-----
From: Heathkit Owners and Collectors List [mailto:HEATH at LISTSERV.TEMPE.GOV]
On Behalf Of Steve Brandt
Sent: Tuesday, May 27, 2008 6:51 AM
To: HEATH at LISTSERV.TEMPE.GOV
Subject: HX-10 Power Transformer

I've been thinking that I want to acquire an HX-10 so I've been watching for
them on eBay to see what the market price would be and I've noticed a couple
of them for sale with their power transformers removed.  Was there a chronic
problem with HX-10 power transformers?  Anything else I should know about
this transmitter before I attempt to buy one?

Steve
WA0GKX

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Products bought, sold or traded here is the responsibility of the
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