[R-390] Tuning the IF question

[Patrick]

A bamboo skewer (bought at any supermarket) and a sharp pocket knife will 
make a great tunning tool (very cheap) for both the upper and lower coils. 
Been using them for many a time.

Pat
----- Original Message ----- 
From: "David Wise" <David_Wise at Phoenix.com>
To: <R-390 at mailman.qth.net>
Sent: Friday, January 06, 2006 11:23 AM
Subject: RE: [R-390] Tuning the IF question


All the information supplied so far is correct, but I don't
think anyone answered Paolo's implied question.  The answer
is, a metal tool will change the coil inductance.  Always
use a plastic alignment tool.

Dave Wise

> -----Original Message-----
> From: Mark Huss [mailto:mhuss1 at bellatlantic.net]
>
> Go to Radio Shack and buy the Alignment Tool Set.  You will
>
> paolo gramigna wrote:
>
> >Hi all,
> >I'm trying to tune up my first R-390A. I have the manuals.
> >When i came to the IF tuning, the manual says that each
> trsnsformer has two
> >lugs; the primary in the bottom, the secondary in the top.
> The problem is,
> >how can i reach the bottom one? There is no hole in the IF
> module chassis;
> >to reach the bottom lug, i have to remove the top one; and so the
> >transformer goes so much out of tune that no reading is
> possible on the
> >VTVM. Where am I wrong?
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