[R-390] 0.5-8.0 Low Sensitivity (Long)

[n4buq at knology.net]

On Wed, 16 Aug 2006 06:56:15 -0400, "dmartin" <dmartin at visuallink.com> 
wrote :

> Hi, Jim.
> 
> The 1st IF cans are unique in that they do not have any caps >inside< the 
can except 
> the trimmers, which means you have to go for a deep dive under the rf 
deck. C281 and 
> C282 are two >very low value< coupling caps that join Z213-1 to -2 and 
Z213-2 to -3. 
> C281 does see B+ and Z213-1 is the only 1st IF can with B+ on its trimmer 
cap. 
> 
> Yeah, if you are going to have to pull the rf deck, carefuly replacing 
all five caps 
> with proper subs may be the way to go. (Where to find a 1.5 pf with the 
needed 
> tolerance, though, and do these funny little "tubular" caps really often 
go bad?)
> 

Surplus Sales of Nebraska has hard-to-find capacitors like this.  They're 
on the web and they're pretty expensive, but it may be one of the very few 
sources for them.

> Let's see how others weigh in on this!
> 
> Thanks for your comments, my friend!
> 
> Dan
>  

Barry - N4BUQ