[hpsdr] 10 MHz clock source

[Phil Harman]

Hi Alberto,

If you have an oscilloscope can you connect it to the Atlas bus C16.  As you select the 10MHz source you should see a 10MHz signal from Mercury or Penelope. If you don't see a signal when Penelope is selected then you may have a problem with the board.  If so then check on pin 3 of the 10MHz TCXO on Penelope to check it is working.

I hope that helps find the problem.

73's Phil...VK6APH


  ----- Original Message ----- 
  From: Alberto I2PHD 
  To: Phil Harman 
  Cc: hpsdr at lists.openhpsdr.org 
  Sent: Monday, June 08, 2009 9:15 PM
  Subject: Re: [hpsdr] 10 MHz clock source


  Phil Harman wrote: 
    Hi Alberto, 

    Let me see if I can shed some light on what is happening.  
     <<< snip >>>

    No mystery - just simple electronics!
  Hi Phil,

    many thanks for your detailed and informative reply. My plans contemplate the use of a recently
  acquired Rubidium unit to generate the 10 MHz reference signal.

  Judging from your explanation, then there must be something broken with my Penelope card....
  If I select Penelope as source of the 10 MHz signal, apparently there is no lock of the PLL, 
  and the received signal has a warbled tone, as I demonstrated in an MP3 file a few days ago.
  This happens no matter what the source of the 122.88 MHz is, Mercury or Penelope....

  73  Alberto  I2PHD




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



  No virus found in this incoming message.
  Checked by AVG - www.avg.com 
  Version: 8.5.339 / Virus Database: 270.12.56/2162 - Release Date: 06/08/09 06:01:00
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20090608/695e52ff/attachment-0004.htm>