[AMRadio] PTO ready to install, but...


Jim Wilhite w5jo at brightok.net
Mon Feb 6 09:04:29 EST 2006


Hey John, congrats on the work.  Sounds like you might make a tech 
yet..............Those things are terrible to get out and you have done a 
good job.

73  Jim
W5JO
----- Original Message ----- 
From: "John Lawson" <jpl15 at panix.com>
To: <amradio at mailman.qth.net>
Sent: Sunday, February 05, 2006 9:54 PM
Subject: [AMRadio] PTO ready to install, but...


>
>
>     Arrghhhh!!
>
>  None of the three Bristol wrenches that were clipped under the lid are 
> the right ones for the PTO Oldham coupler - so I'll have to wait for 
> Tuesday to get the set I ordered from McMaster-Carr - $10 for a set of 9, 
> 4- and 6-flute - not a bad deal.  www.mcmaster.com and search for 
> 'bristol' then scroll down a ways.
>
>
>    Found out that the problem with the center-point offset was gross 
> mis-adjustment of the 'span' coil - the closer I pulled it in, the better 
> the linearity got - now she's within about 1.5 KHtz overall - back in the 
> radio it goes.  Then - the kit of new (NOS, and/or tested to new spec) 
> tubes, a thorough RF-IF alignment, and we'll see how the Old Girl does. 
> I'm hoping to be rather pleasantly surprised - it sure will look pretty, 
> at any rate!
>
>
>  Cheers
>
> John  KB6SCO
>





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