[R-390] NOS 390 A cabinet

Sun, 05 May 2002 12:05:58 -0700

Mac is again the prime mover and shaker in the world of supply and demand...
:-)   Jerry W5KP

----- Original Message -----
From: "Allen (Marty) Martin" <[email protected]>
To: <[email protected]>
Sent: Sunday, May 05, 2002 7:35 AM
Subject: [R-390] NOS 390 A cabinet

> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1350899355
>
>
> NOT MINE!!!
>
> Marty
>
>
> ----- Original Message -----
> From: "Barry Hauser" <[email protected]>
> To: "Paul H. Anderson" <[email protected]>; "Jim Temple" <[email protected]>
> Cc: <[email protected]>
> Sent: Sunday, May 05, 2002 7:25 AM
> Subject: Re: [R-390] R-390 slugs
>
>
> > Greetings Gang:
> >
> > I don't know if the weighing approach is the best first step.  As I
> recall,
> > we found a variety of color marks on the non-A slugs with no particular
> > pattern to which was used where.  Then, someone reported first-hand
> > knowledge that these were cherry-picked and/or hand matched to the coil
> they
> > were to go in.  That seemed to end the thread, if I remember right.
> >
> > What about this?  Hook up a reference coil to a Q-meter and use a
caliper
> or
> > something to control vertical position.  Then read Q and resonant
> frequency
> > for an assortment of slugs at various positions in the coil.  Maybe
figure
> > out a pattern to those colors and then weigh them.
> >
> > Any thoughts?
> >
> > Barry
> >
> >
> > Jim Temple wrote:
> > >
> > > > Well, I have been going over the Yahoo archives and it seems that
> there
> > is
> > > > no easy way to judge what slugs and coils match in the R-390.  There
> was
> > > > considerable discussion about color codes, etc.  Everything you ever
> > wanted
> > > > to know about R-390 slugs is discussed in the April 1999 time frame,
> > give or
> > > > take a couple of months, in the Yahoo archives, except the final,
> > definitive
> > > > answer.  So it seems there is no real answer, beyong going back in
> time
> > to
> > > > question the manufacturers of these items. :-)
> > > >
> > > > Jim
> > >
> > Paul Anderson wrote:
> >
> > > It seems to me that a slug is a bunch of iron powder in a binder.  How
> > > tough would it be to dissolve the binder, then weigh the powder to see
> how
> > > much it takes, then make new ones?  Hmm... I've got a gunpowder
scale...
> > > maybe time to weigh the slugs themselves with binder to see if I can
get
> > > weight differences.
> > >
> > > Paul
> > >
> > > _______________________________________________
> > > R-390 mailing list
> > > [email protected]
> > > http://mailman.qth.net/mailman/listinfo/r-390
> >
> >
> > _______________________________________________
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> >
>
>
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