[R-390] R390A rf slug id help needed

[Fred Moore]

Phil, 

The best way to sort this out is to measure the sensitivity near the top and
bottom of each of the ranges --
16-32; 8-16; 4-8, etc.  If the correct slugs are installed, the sensitivity
will be normal.  If it is a lot less than normal, the slugs may have been
re-assembled in random places.  I know someone I can ask about this, who was
trained to repair these while in the Army, if it comes to that. 

-Fred

------ Original Message ------
Received: Sat, 08 Aug 2020 07:11:13 PM GMT
From: Phil <pmills7 at comcast.net>
To: fred_moore at usa.netCc: Collins R-390 HF Receiver List
<r-390 at mailman.qth.net>
Subject: [R-390] R390A rf slug id help needed

I have been contacted by someone kind enough
to get a slug for me but it has raised a
question in my mind.

The slugs in my set of rf racks have small dots
of paint on the tops.  There is white, red, and
no color.  But looking at what I have, there is
no logic to where the colors are placed within
a single rack.  Sometimes white will be in the
front most coil and sometimes in the center or
rear.  It is the same with red and no color.
Is this correct?  Is there any documentation as
to what goes where?

thanks, Phil
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