[R-390] Autopsy of a bad PTO.

Sat, 28 Jun 2003 23:18:22 -0400

Sorry.  I assumed incorrectly you were new to this addiction.  Yeah 5-6 or
so is a good go at it.   I have 3 here, one basket case,  one "nea"r
Collins, one Stewart Warner, 2 more than I really needed.   I always dread
the PTO work.

----- Original Message -----
From: "Phil Atchley" <[email protected]>
To: "'Jim Miller'" <[email protected]>; "'Barry Hauser'"
<[email protected]>; <[email protected]>
Sent: Saturday, June 28, 2003 11:11 PM
Subject: RE: [R-390] Autopsy of a bad PTO.

Jim et al...

> This is a real hard introduction for a new 390a owner, but once you have
> accomplished the PTO initiation, you will be a true member of the
> fraternity.  Good luck!

Well, this is R-390A number either 5 or 6 (you tend to lose count as you get
older) that I have had and overhauled here (one belonged to a friend).  In
fact, come to think of it, over the years this one may actually be number 7
overall.  That doesn't include one Junker that was parted out and an R-391
autotune unit that I obtained and sold without repairing it.  I just can't
stay away from the things!! When one arrives at the house one way or another
and I show it to my wife, she just looks at it and says, "Yep, another big
gray radio".

This is just the first one that I EVER had this many problems with the PTO.
All the others except one had Collins PTO's.  The lone exception was an EAC
belonging to a friend.  That one had a Cosmos PTO which, after a little
tweaking lined up on the end points and the 100 KHz calibration spots were
in tolerance (didn't check the 25 KHz points).  So, I've done a few of these
critters.

73 de Phil, KO6BB
DX begins at the noise floor!
[email protected]
Merced, California
37.18N  120.29W  CM97sh

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