[R-390] R390A alignment question

[Craig C. Heaton]

Bob,

A quick stab at the question/answer. Some of the first R-390A receivers had
IF strips set at 455kc. The top cover of the mechanical filter was flat, no
indentation where the nut to hold the cover is located. So, if your IF strip
has that recess on the filter cover, stagger tune.

I don't have the Y2K in front of me, Bob, keep one close by.

Regards,
Craig




-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of Bob
Sent: Friday, January 08, 2010 2:37 PM
To: R-390 at mailman.qth.net
Subject: [R-390] R390A alignment question

OK gentlemen, here is my first question for today. In TM 11-5820-458-35,
section 72,(Alignment of Fixed Tuned IF) it states to align T501 to 467kc
which I assume is setting stagger tuning.  I have an old Stewart Warner
R-390A and this transformer is currently set for 455kc. Do I just peak the
IF strip at 455kc or do I set it up stagger tuned as listed in the book. 

Side note -   The process for aligning the PTO to the RF deck with the freq
counter went well just as everyone described.
Bob Fay   WC0D

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