[ARC5] AN/ARC-3

[Richard Schumann]

>When I was getting my set running, the biggest problem
was dirty relay contacts. I burnished and cleaned contacts
over and over



I just looked at a Yootoob video on the ARC-3 and 25 seconds in he opens the front and it says right on the set not to burnish the contacts.  Any reason why?  I always thought that to be a good way to get 'em working again.

https://www.youtube.com/watch?v=zcbaJdB_Mkc

Richard kn7sfz




  ----- Original Message ----- 
  From: Jack Antonio 
  To: arc5 at mailman.qth.net 
  Sent: Thursday, March 28, 2013 7:32 PM
  Subject: Re: [ARC5] AN/ARC-3


  The AN/ARC-3 is fun to watch, as it tunes itself up.

  The only manual thing about changing crystals is that
  a thumbwheel on the receiver has to be set to select
  the proper harmonic for tune up. Note that the
  set tunes itself up every time the channel is changed.

  I had mine set up and running a few years back, and Hank
  Brown and I had an ARC-3 to ARC-3 QSO at San Luis Obispo.

  When I was getting my set running, the biggest problem
  was dirty relay contacts. I burnished and cleaned contacts
  over and over, but the more I exercised the set, the more
  reliable it became.

  It has been probably 5 years since my set was fired up, it
  should be interesting to see how it does now, and it is on
  the project list.

  Jack Antonio WA7DIA/4

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