[Heath] DX-100 Ideas

[Bry Carling]

Most replacement caps will not fit under the DX100 chassis.

I have an original Heathkit one if you need a replacement.

I also have rplacement parts for almost amything you could need for a 
Heathkit DX100 - all the transformers, choke VFO, tubes, knobs, crystals, 
variable caps, switches, meter, front panel, a shiny chassis too (yes!)

Just let me know what you need and we will arrange something suitable to get that 
rig in perfect shape..

On 29 Sep 2011 at 3:38, Pigman wrote:

> First off,  I built a DX-100 as a kid back in the mid 50s and have
> always had a soft place in my heart for them.  That said,  I need
> some ideas from you gents.
> 
> A long time ago,  I acquired and pretty sad looking DX-100.  The
> price was right, FREE!  It is all there.  The front panel looks
> pretty nice.  However, everything else goes down hill from there. 
> It is dirty, scratched cabinet and a fairly ugly copper plated
> chassis with rust. Of course, the paper and electrolytic caps are
> most likely bad and there are probably a bunch of out of tolerence
> resistors in it too.  I am thinking of radically restoring the
> transmitter.
> 
> I am thinking of taking it totally apart, have the chassis pieces re
> plated, maybe make a new wiring harness and then build it up again
> with many new caps and new carbon resistors as a new kit.  (I'll re
> use the temperature compensating caps and most likely the precision
> resistors and certainly the variable caps).  I'll also repaint the
> cabinet as original or at least close to it. When finished, it
> should look very nice.
> 
> The one thing that really bugs me is the loading cap.  As a kid,  I
> blew up that "stacked Heathkit home made multi-section loading cap"
> in the rig. I bought a upgrade kit from Heathkit to replace it with,
> I think, 3 or 4 new transmitting mica caps which were real
> transmitting mica caps.  I think maybe Heathkit also later on sold a
> 3 section loading cap as used in the Apache to also replace this
> "stacked" mica.  Of course non of these upgrade kits are offered
> today.  So my question is, when I rebuild the DX-100, I don't want
> to use that old 3 section Heathkit made "stacked" loading cap.  I
> know it is a poor cap to use.  What do I use in it's place?  Could I
> maybe find a 3 section 365pf variable and put it in there? Will it
> fit?  I'm wondering what others have done when faced with this
> problem.  I would even consider using the fixed transmitting caps as
> used in one of Heath's upgrade kits if I could find them. (200pf,
> 400 pf, 600 pf, and 800 pf). I just hate to think of using that
> "stacked" home made loading cap Heath supplied with this kit. 
> 
> I'd appreciate hearing from others on how they approached this weak
> link in the original DX-100 transmitter.
> 
> Lee, w0vt
> Houston, TX
> 
> 
> 
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