[R-390] Request help in making a survey...

[Randy and Sherry Guttery]

I've finally been able to get back to working on some of the 
updates I'm doing for the 390A Y2K manual (weather and work 
issues combined such that I haven't had much spare time for 
a couple of months...  we're still seeing some 
thunderstorms, etc. - but NOTHING compared to April)-

Anyway - one of the things that I can't find documented 
anywhere - is the color coding of the ferrite slugs.  Seems 
in most of the radios I have looked at lately -  "A" radios 
have RF section slugs with a Red and White mark,  IF section 
slugs with a Green and Brown mark.  However - I've also come 
across slugs with just a green mark, some with just brown - 
and of course slugs that don't appear to have any marks at all.

The 390/1s are another case altogether - seems like the RF 
input has Red/White - 2nd RF another color, third and forth 
yet other colors (orange and yellow IIRC).  The IF is also a 
mix (blue and green mostly).  As old as they are - it's 
sometimes hard to tell whether there is a color - or 
discoloration on some...

So here is my request:

Next time you get an opportunity - note the manufacturer of 
your RF chassis, and note any  color dots / marks on the 
slugs. For those that may not have noticed them - the dots 
(or blob/s of paint) are usually on the top end of the slug 
- around or either side of the "spring" that holds it to the 
adjustment screw.

  It's pretty easy to tell the "A"s from the 0/1s by the 
extra colors - but if you do have an "0/1" with a "standard 
set" - please be sure and note that (i.e. all RFs Red/White 
& all IFs Green/Brown).

Please send your responses either via the list -- or if you 
prefer - directly at comcents at bellsouth.net .  Again - these 
will be documented and added to the 390A Y2K manual (and a 
separate table for inclusion with a manual for the 0/1s).

Thanks!
best regards...

-- 
randy guttery

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