[time-nuts] Info on HP 10514A and 10534A mixers?

Dave Brown tractorb at ihug.co.nz
Sun May 27 17:02:13 EDT 2007

----- Original Message ----- 
From: "John Ackermann N8UR" <jra at febo.com>
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Sent: Monday, May 28, 2007 8:32 AM
Subject: [time-nuts] Info on HP 10514A and 10534A mixers?

> Anyone have a manual for either (or both) of these mixers?  I picked 
> up
> a couple in very nice shape at the Dayton Hamvention and am doing 
> what
> may be a very interesting experiment that involves using them to 
> downmix
> two synthesizers set to produce a difference frequency in the HF 
> range,
> and then measure their phase noise via the difference frequency.
> In particular, I'm interested in the optimal input levels, the 
> output
> frequency range, and to verify what the "L", "X", and "R" connector
> markings are.  I'm assuming L is local oscillator, X is input, and R 
> is
> output, but that's just a guess (for all I know, "L" could be "left" 
> and
> "R" could be "right"!)
> Thanks,
> John

Don't think I ever saw a manual for these although I did use quite a 
 The 1969 catalog (hparchive have it for download) has 3 pages 
describing them starting page 264.
 DaveB, NZ 

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