[ARC5] Odd Crystal Oven

[Glen Zook]

VERY common, especially in items like high stability counters, service monitors, and so forth.

 Glen, K9STH 
Website: http://k9sth.net

      From: Robert Eleazer <releazer at earthlink.net>
 To: arc5 at mailman.qth.net 
 Sent: Tuesday, June 7, 2016 3:31 PM
 Subject: [ARC5] Odd Crystal Oven
   
 I was working on my SG-297 signal generator yesterday, in preparation for using it to test a PRC-77 I bought.  I found the calibrator was not working and discovered something I think unusual.   The 1 MHZ oscillator module does not only use a crystal oven, the whole oscillator is in the oven.  And that sucker gets hot, too!  I wonder if baking a 2N706 transistor and its related components like that is a good idea?  Anyway, I have never seen this done before. I ordered a 1 MHZ oscillator module and I'm going to try to replace the original with that.
  
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