[Milsurplus] replacement question -

[Al Klase]

Richard,

Could be the infamous Micamold paper caps or similar product from 
another manufacturer.  Keep in mind that a .008 uF mica could be pretty 
big.  If in doubt, hit one with a hammer, and see what's inside.

Al

On 8/10/2013 4:16 PM, Richard Brunner wrote:
> I once resurrected an RBL receiver, and a dozen mica capacitors and 
> only one oil-paper capacitor failed. I just checked the instruction 
> book, and it says "Capacitor, Molded Mica."  Some are suspiciously 
> large for mica, 1000 to 8000 mmfd, so they could have been paper.  
> Maybe quality control was lax during WWII, but I have been suspicious 
> of micas ever since.
>
> Richard, AA1P
>
>>> capacitor replacement .
>>>
>>> "Normally" the Silver Micas never need replacement but if they have 
>>> to be replaced could that be effectively replaced with a modern 
>>> ceramic with the appropriate
>>> tolerance and temperature characteristics.  which leads me to this 
>>> question:  In WW2 what were the typical characteristics of a Silver 
>>> Mica capacitor?
>>>
>>> Just shoot me for asking.
>>> Hutch
>>>
>
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/