[Boatanchors] Recapping SX-100

[Garey Barrell]

Thanks for all the replies....
I wonder...   Hallicrafter's was the "Mad Man Muntz" of communications 
receivers when it came to parts quality.  They had terrific designs, 
implemented with consumer radio parts.  Compare the variable cap in the 
SX-100 with the one in the HQ-140 or the NC-300 for one good example.

That said, I wonder why Hallicrafter's used "Black Beauty" paper caps 
for  _everything_  when disc ceramics were available, at least in the 
values under 0.01uF, and were cheaper?  Possibly just volume 
discounts?   Minimizing number of different parts to stock/purchase?

73, Garey - K4OAH
Glen Allen, VA

Carl wrote:
> I refuse to use OJ's for the same reason. They look so garish and 
> offer absolutely no benefit over discs. When I need a film cap I buy 
> from one of the many overstock dealers on Ebay and go for the green or 
> brown ones.
>
> All caps can cause audio distortion but in a basic single ended amp I 
> use disc which is exactly what the manufacturers used in the 60's once 
> 400-600V, high value discs came down in price.
>
> I use mylar in PP amps but using HP equipment I havent been able to 
> see any difference in distortion.
>
> Carl
> KM1H
>
>
>
> ----- Original Message ----- From: "Garey Barrell" <k4oah at mindspring.com>
> To: "Boatanchorslist" <boatanchors at mailman.qth.net>
> Sent: Thursday, March 12, 2009 5:29 PM
> Subject: [Boatanchors] Recapping SX-100
>
>
>> Oops!   I'm referring ONLY to bypass caps, obviously caps used for 
>> resonating filters or in timing
>> functions need to be mylar, etc.  Some say audio coupling as well, 
>> but...
>>
>> I believe this has been discussed before, but I can't find anything in
>> the archives.
>>
>> Is there any reason to NOT use disc ceramic caps to replace paper caps
>> in a receiver?
>>
>> Also, are there any sources of paper/mylar caps other than the radial
>> Orange Drops or the brilliant yellow axials?   Neither "look" right, and
>> the radial leads are almost always a problem in a chassis laid out for
>> axials....
>>
>> -- 
>> 73, Garey - K4OAH
>> Glen Allen, VA
>>
>>
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