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

[rbethman]

The SX-101s are in the 50.5 KC 1st IF.

If they are always used, and maintained, they will last for a long time.

They *can* be a PIA to work on.  It depends on what goes kaput.

Bob - N0DGN
>>
>     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
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