[Hammarlund] Paper caps

[James A. (Andy) Moorer]

Ceramics for the RF deck for bypass.
If you have to replace a mica, use a modern dipped mica for stability.

You shouldn't use the Orange Drops anywhere the frequency is over 1 MHz or 
so. They have more inductance than, say, the ceramics. I measured the 
self-resonance of a .01 uF Orange Drop as 1.5 MHz, which means it is not 
acting like a capacitor any more at that frequency and above.

James A. (Andy) Moorer
www.jamminpower.com

----- Original Message ----- 

> What is the opinion of the list as to what type of capacitors I should use 
> to replace the paper Astron and West-Cap capacitors in the rf strip on the 
> sp-600?  I have a good stock of new Sprague Orange Drops or I can use 
> ceramic disk.  I don't want to have to do this again.  Of course, at my 
> age, it's doubtful that will happen!
>