[Milsurplus] BC-221Tempature compensating Capacitors question

[Revcom]

Sounds about right for a 50+ year old xtal??

Rod
K0EQH
  ----- Original Message ----- 
  From: John Hutchins 
  To: jfor at quik.com 
  Cc: milsurplus 
  Sent: Wednesday, February 04, 2009 5:00 PM
  Subject: Re: [Milsurplus] BC-221Tempature compensating Capacitors question



  John -

  Yes missed some places; it is a typ O 1000.122 KHz at cold startup,  drops real fast 1000.050 Khz  drifts to 10000.020 Khz after 1 hour  Hits 1000.000 around the  2 hour mark
  Later
  Hutch 
  J. Forster wrote: 
If the data you present here is correct, you have some other problem. No
1000 KHz crystal should ever oscillate at 1220 KHz. 1220 Hz off, maybe,
but even that seems excessive.

FWIW,
-John


  The Crystal Reference Oscillator starts high 1220KHz. As the unit warms
up after 2 hours the Crystal Oscillator comes down to 1000KHz +20 -0 Hz
    

 
































































































































































  



------------------------------------------------------------------------------


  ______________________________________________________________
  Milsurplus mailing list
  Home: http://mailman.qth.net/mailman/listinfo/milsurplus
  Help: http://mailman.qth.net/mmfaq.htm
  Post: mailto:Milsurplus at mailman.qth.net

  This list hosted by: http://www.qsl.net
  Please help support this email list: http://www.qsl.net/donate.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.qth.net/pipermail/milsurplus/attachments/20090204/95365fc2/attachment.html