[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.
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.
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.
mailto: chris at chriswilson.tv
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