[R-390] Need a RF slug for a R-390A

[David Wise]

Yes, it's in the Cost Reduction Report.
The R-390 slugs were individually tweaked;
process improvements let them do away with
that in the R-390A.  There's just the
two kinds, RF and IF, and within each
category they can be swapped at will.

I repaired a broken spring* with JB Weld.
It's held up for years.

I tried to position the triangular carriers
for minimum spring flexure.  In a few cases
this required filing the central opening in
the rack.

* Technically correct, but unlike most
springs, these are always coil-bound.
More like a flexible wire, bendable but
constant length.  In fact, aren't they
literally wires in the R-390?

Dave Wise

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Barry
Sent: Wednesday, April 08, 2009 6:43 PM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] Need a RF slug for a R-390A

Interesting.  I thought all the slugs in all octaves were interchangeable. 
I know they're not interchangeable with the IF slugs, but I thought all RF 
slugs were interchangeable.  I know when I rebuilt at least one of my RF 
decks, I removed all racks, holders, triangular slug holders, etc., cleaned 
them all, and re-assembled them in no particular order.  I didn't notice any 
degradation of performance but ...

Barry - N4BUQ

----- Original Message ----- 
From: <Flowertime01 at wmconnect.com>
To: <r-390 at mailman.qth.net>
Sent: Wednesday, April 08, 2009 8:05 PM
Subject: Re: [R-390] Need a RF slug for a R-390A


> Bob,
>
> The spring thingy can also be solder back together.