[R-390] RF Deck Problem

[Roy Morgan]

At 09:40 AM 1/2/03 -0500, Bob Camp wrote:
>There is a way to hook up the RF deck, (and service it in place) but it's 
>a *major* pain.
>----- Original Message -----
>From: "Kurt Schnabel" <classicmotorcycleclub@hotmail.com>
...Can I repair the R390 RF
> > module with all cables connected?  ... to find the reason for a very weak
> > reception?

Kurt,

I assume that the RF deck on the non-A has test points in the same way that 
the R-390A one does. These are installed for just this problem.  Insert 
test signals at the various test points to determine which stage is giving 
you the low gain. Search the manual for a chart that has the approximate 
signal levels at each stage under test conditions.  You should be able to 
isolate which stage is not working right. The frequencies will not be the 
same as  the dial frequency after the first mixer.  You will come to 
understand the mixing scheme a bit during this exercise.

Good luck, and report any success.

Roy
Who has a fine EAC-67 with a dead RF deck.

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan@nist.gov --