[time-nuts] 5060A acoustic noise issue

Dave Carlson dgcarlson at sbcglobal.net
Tue Jan 8 16:17:22 EST 2008

You might try Frequency Standards and Services in Colorado Springs for any 
parts. However installing the 5061A/B A11 Dc Oven Controller into a 5060A 
may not be simple.


----- Original Message ----- 
From: "corby d dawson" <cdelect at juno.com>
To: <time-nuts at febo.com>
Sent: Tuesday, January 08, 2008 8:48 AM
Subject: [time-nuts] 5060A acoustic noise issue


I once obtained a 5060A that was used in the time and frequency lab at

I guess it had sentimental value to them as they kept it going long after
the 5061B had come out.

It had a newer tube in it and more to the point it had one of the later
5061A/B style A11 oven controller modules installed.

This provides DC to the hot wire and no acoustic noise!

I can't remember where they shoe-horned it in as it is a taller module
than the 5060As.

These A11 units are obtainable and the modification would not be

Best regards,


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