[R-390] Out of the closet!

[Ben Loper]

How do you apply the oil to the gears, I'm lubing a completly dry R-388 and
don't want to make a mess of it.  How about the slides, no grease there
either?

On Wed, Jan 20, 2010 at 4:01 PM, Les Locklear <leslocklear at cableone.net>wrote:

> Paul,
>
> The last PTO is a Progressitron Corp. PTO. It is a conventional "corrector
> stack" type PTO similar to the Collins, Motorola and Dubrow.
> The only different design was the Cosmos PTO.
>
> Les Locklear
> Gulfport, Ms.
> Dx'ing since '57
>
>
>  ----- Original Message -----
>  From: Paul Galpin
>  To: R-390 at mailman.qth.net
>  Sent: Wednesday, January 20, 2010 1:56 PM
>  Subject: [R-390] Out of the closet!
>
>
>  Hi there!
>
>  Some many years ago, I was given a 390A to repair - symptoms: dead.  With
>  help from this list, I got it going again, and, on the day of moving to my
>  present retirement address, I was offered it at a good price.
> Unfortunately,
>  finances were very doubtful at that stage so I had to pass on it.
>  Since the I have been lurking on the list, drooling with envy!
>
>  Lady Luck has been around, and today I took possession of 2x 390As, one
>  working, the other not, that's what the seller says.
>
>  OK, I know about the obvious things, like C553(?) to protect the filters,
>  but what can I learn from the ID plates?
>
>  "Working" has
>
>  Ser No 2114
>  Imperial Electronic Corp
>  37856-PC-63
>
>  PTO ser No 1551
>  Dubrow Electronic Industries
>  Type 798 BM101
>  this label appears to be stuck over a different previous one.
>
>
>  "Non-Working" has
>
>  Ser No 3123
>  Teledyne Corporation
>  35064-PC-62
>
>  PTO Ser No 7867
>  Type 798
>  P???R??STRO???Corp
>
>  What does this tell us?
>
>  The 390A I worked on long ago had the gears smothered in grease, put on by
>  the handful.  These two sets that I have just got have very clean gears,
>  with a trace of oil only. Which is correct? Which is typically original?
>
>
>  Paul Galpin
>  ZS2PG
>
>
>  --
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