[Hallicrafters] SX-42 Power Transformer

[Barry Hauser]

Hi Chuck & list:

All of the square "H" tops I've seen are add-on trim, not really part of
the transformer.  

I'm not sure, but I think these were standard on the SX-42's and early
SX- 62's (and some other models).  They seemed to disappear on the later
SX-62A's (and B's?).  I have an SX-42 that doesn't have the cap.  It's
possible the transformer was replaced on some and whoever replaced them
didn't bother to reinstall the top or it no longer fit.

If I'm not mistaken, I've seen photos of Halli's with a switch mounted on
those covers.  (dual voltage?)

I doubt they would have much effect on running temperature of the
transformers.  Might even act like a heat sink and dissipate some. 
However, I'd guess they were purely for show like the flashy decals on
auto air cleaners with "Super-Dooper V8" -- looks good when you pop the
hood.

Barry



On Thu, 24 Oct 2002 10:17:03 -0700 Chuck McGregor <cbmcg at attbi.com>
writes:
> 
> While exploring a newly acquired SX-42, I've discovered a mystery at 
> the 
> power transformer.  The rectangular top end bell, with the 
> Hallicrafters 
> logo stamped on it, is a dummy.  Underneath it is a "normal" 
> contoured end 
> bell.  I'm wondering why??  Did earlier production use a potted 
> transformer 
> with rectangular shape - so that the fake end bell covers up a 
> production 
> change ?  The way it is attached provides minimal heat transfer, so 
> this 
> fake end bell will probably cause the transformer to run warmer than 
> 
> without it.  Perhaps the design folks who came up with the front 
> panel 
> design and the weird clutching scheme on the tuning knob just think 
> that 
> boxy transformers looked prettier ??
> 
> Does anyone know the history of this one ?
> 
> Thanks
> 
> Chuck  N7RHU
> 
> _______________________________________________
> List Administrator: Duane Fischer, W8DBF **for assistance**
> dfischer at usol.com
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> 
> 

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