[time-nuts] Thunderbolt GPS and frequency divider loading question.

David C. Partridge david.partridge at perdrix.co.uk
Tue Aug 14 09:18:51 UTC 2012

The input of the divider is 50 ohm terminated.
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On Behalf Of Chris Wilson
Sent: 13 August 2012 22:26
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Thunderbolt GPS and frequency divider loading question.

  13/08/2012 22:18

David Partridge was able to supply one of his last remaining frequency dividers to me, for use with my TB GPS standard. It works perfectly and is now in a nice enclosure feeding a small array of BNC sockets on my shack wall. My question is, if I take the 10 MHz output of the TB into David's frequency divider:


is it loaded much? Can I T off at the TB 10 MHz output port and feed a socket on my distribution panel to see the unadulterated 10 MHz sine wave as well as having it feeding the divider? It's very useful as I now have a 1 MHZ standard to run my old Racal frequency counter off, plus all the other output frequencies. I used to use the 10 MHz output of the TB direct to the Racal, but had to remember to do the maths, I was a bit surprised 10 MHz worked at all into the external standard
1 MHz input port.Thanks.

       Best Regards,
                   Chris Wilson.
mailto: chris at chriswilson.tv

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