[time-nuts] How do I know my GPS stabilized oscillator is working?

[Bill Hawkins]

Many thanks, Glenn.

I should have known what LPRO and UT+ were.

For a good time, ask Google for TVB-DIV, without quotes.
One hit says it's a gnu compiler error, another hit comes
from a crypto group.

I have a need for a decade divider from 10 MHz to 1 MHz.
Considered using the HP regenerative divider scheme, but
haven't gotten around to it. You triple the 1 MHz to 3,
triple again to 9, mix it with the 10 MHz input and
extract 1 MHz to be tripled, etc. Or use a ringing 9 MHz
tank hit with a 1 MHz pulse, which you can do when the
frequency comes from a standard.

Regards,
Bill Hawkins


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Glenn
Sent: Thursday, August 03, 2006 12:59 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] How do I know my GPS stabilized oscillatoris
working?

Bill Hawkins wrote:

>Excuse my ignorance, but what is a "nice box" and what are LPRO, UT+, 
>TVB-DIV? A computer and programs I should know about?
>  
>

The LPRO is a Rubidium oscillator from Efratom, now Symmetricom.

UT+ is the Motorola Onocore UT+ GPS reciever.

TVB-DIV is a frequency divider, designed by TVB, built by Brooke Clarke.
Still in prototyping, but works pretty well.

A "nice box" is a jewel box we got at a local art gallery:
http://net127.com/archives/images/01010019.jpg
which happens to be the perfect size to fix the LPRO, UT+, TVB-DIV and an
interface board. (Hopefully, I'll be able to work out any thermal
issues.)

cheers,
glenn



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