[R-390] No "Depot Dawg"

[Philip B Atchley]

Hello again.
Well, today I pulled the IF and RF decks out of my "new" R-390A to start
recapping and refurbing them.  As it turns out, all modules (and rear
panel) are EAC with SN's ranging between 7125 and 9961.  

Knowing how the depots tended to just throw everything in large bins (or
whatever) and slap the R-390A's back together using whatever modules were
ready to install, I highly suspect that this unit has never been through
depot maintainance.  The only thing not EAC is the PTO, which is Collins.
 I may put the Cosmos PTO in this unit if I can get endpoints etc set
correctly.

I got the transmission cleaned up really nice today (it wasn't very grimy
anyway).  Removed all the coils and cleaned em, "Caiged" the sockets for
the coils.  Cleaned the roller bearings on the slug racks etc.  Got all
that back together and the whole mechanism is much, much smoother and
easier tuning now.  It won't go back in the mainframce until all the
modules are completed, just in case I "forgot" something. 

Question 1:  The RF and IF decks only have a couple of the "Brown
Beauties", which naturally will be replaced.  The rest are either flat
Yellow Aerovox units that "look" relatively modern, or the "West Cap"
metal/glass types. I've heard these were relatively reliable.  Are
they???

Question 2:  I've used De-Oxit D5 on the bandswitch wafers in previous
restorations, but have since read (somewhere) that it can swell the
phenolic somewhat and cause trouble.  The Xtal Oscillator switch looks
like phenolic or bakelight (brown) while the RF deck switch wafers are
green (Fiberglass?) Any truth in this?       

73 de Phil  KO6BB
Loving home provided for wayward Boatanchor Receivers
ko6bb@juno.com
Merced, Central California
37.18N  120.29W  CM97sh

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