[Hallicrafters] SX-100 and others 50 kc IF subchassis

[Richard Knoppow]

>
> Hmm, I do have to wonder why Halligan & Co. felt as if 
> they had to make their receivers so hard to work on. 
> Maybe the intent was that they would not be repaired, past 
> a certain point... merely, REPLACED.  With another Halli, 
> of course....
>
> 73
>
> Mike
> W4DSE
>
     Not all of their receivers are that hard to work on but 
I think probably the design was compromised toward being 
cheap to make.  Hallicrafters always concentrated on keeping 
the price low while delivering good performance. In other 
words, high value for money.  As a result I think they _did_ 
wind up with designs that were cheaper to replace than to 
repair.  The life was probably calculated to be on the order 
of ten years or so.  We have a similar result for different 
reasons with current consumer electronic produces: they are 
cheaper to replace than to repair and my not be repairable.
     Also remember that when there was an early life failure 
in these older radios they could be returned to the factory 
if necessary for repair.
     Anyone who ever built a Heathkit has some idea of how 
equipment is built in layers. Heathkit warned that the 
instructions were to be followed _exactly_. If you did that 
you were OK, if you tried to anticipate you would get into 
trouble.  The factory built equipment based on something 
like the heathkit instructions.  The result is that some 
repairs are like archeology where you have to remove layers 
to get at something.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com