[R-390] 4KC Filter

[chacuff]

You should note two distinct peaks on each trimmer.  If not then you may 
have to change the padder cap value to get back in resonance.  I've had to 
do that on several occasions where the trimmer only had one peak in 360 
degrees.  Should peak twice 180 degrees out.

If they all do...then you probably have a bad filter.

Cecil
K5DL
----- Original Message ----- 
From: "Jim" <jbrannig at verizon.net>
To: <r-390 at mailman.qth.net>
Sent: Friday, May 11, 2012 11:42 AM
Subject: [R-390] 4KC Filter


> I'm in the process of aligning my 67 EAC R-390A.
>
> All is working well except for the 4KC filter, the signal level is about
> half (3db.)  the level of all the other filters.
>
> The trimmers peak normally.
>
> Bad Filter?  I hope not, any other ideas?
>
> Thanks
>
> Jim
>
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