[R-390] COSMOS PTO EP ADJUSTMENT

[Les Locklear]

Along with the Keilbasa.........

Les

  Bob - N0DGN A known witch said:

 "I guess I'll get burned at the stake in Salem!"
  ----- Original Message ----- 
  From: rbethman 
  To: r-390 at mailman.qth.net 
  Sent: Wednesday, April 21, 2010 2:13 PM
  Subject: Re: [R-390] COSMOS PTO EP ADJUSTMENT


  Barry,

  Yes, from the coupler back takes out "some" of the engineering and 
  design issues.

  You still have a ten turn encoder system.  It would require "another" 
  frequency source, and at a very odd start and stop point(s).

  I use encoders in VHF radios, I have one in an HF dedicated receiver.  
  (SS)  Birdies all over the place!  My other use is in the guidance and 
  tracking of a telescope.

  They indeed have their place.  I'm just trying to balance the function 
  vs. the effort, issues, and $$$ to get there.

  As to heresy.  I've probably committed it in the restoration process so 
  far.  To some I've gone too far already!  I've removed the "Blue Stripe" 
  in the process of restoration.

  I guess I'll get burned at the stake in Salem!

  Bob - N0DGN

  On 4/21/2010 2:07 PM, Barry wrote:
  >   On Wed 21/04/10  1:18 PM , rbethman rbethman at comcast.net sent:
  >    
  >> I believe the very first hurdle would be the need for ten turns of the
  >> Kc knob.
  >>
  >> Since this not only turns the PTO for frequency adjustment, but tunes
  >> the slug racks, and the Veeder-Root counter.
  >>      
  > I was talking about only from the Oldham coupler back (just the PTO) so it wouldn't involve the slug racks, counter, etc.
  >
  > As for the noise, yes, that's a point; however, it could be viewed as a trade-off between being spot-on frequency every time all the time (or at least as "spot-on" as the 17mc oscillator allows) versus some noise.
  >
  > It was just a thought...
  >
  > Barry - N4BUQ

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