[R-390] Question

[Lester Veenstra]

r-390.com



Lester B Veenstra  MØYCM K1YCM
lester at veenstras.com
m0ycm at veenstras.com
k1ycm at veenstras.com
 

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-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Barry
Sent: Friday, April 22, 2011 6:01 PM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] Question

 C553 is not one of the trimmers.  It is located underneath the IF chassis.

Chuck Rippel used to have a webpage that clearly showed its location but I
can't seem to find that at the moment.  Perhaps another list member can
point you to that page.

Barry - N4BUQ

> My R-390A is an EAC 1967 contract. Looking at the Y2K manual, chapter 
> 12 page 5, my IF sub-chassis appears to be the MOD 1 with the trimmers 
> on top of the filters.
> 
> My question is: Looking at the drawing I don't see a C-553 listed. What
> capacitor am I supposed to change to protect the filters from getting 
> zapped by the B+ ?
> 
> Thanks
> Roger


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