[time-nuts] Another Trimble Thunderbolt-like GPS?

[Robert Atkinson]

Hi Rob,

It has a component level GPS, not a standard module.
Interesting that some have connectors cut off and none are being sold with the case. I think that there were restrictions regarding re-use as part of the disposal contract. Perhaps different interpretation by some re-sellers. I doubt that gold recovery was the object. They would not be so neat, nor would they leace the other gold plated components. 

Robert G8RPI.



________________________________
 From: Rob Kimberley <robkimberley at btinternet.com>
To: 'Discussion of precise time and frequency measurement' <time-nuts at febo.com> 
Sent: Monday, 19 December 2011, 10:30
Subject: Re: [time-nuts] Another Trimble Thunderbolt-like GPS?
 
Don't recognise it. 

Obviously a telecoms system of some sort as -48VDC. From a Google search of
the Trimble P/N I get some Chinese sites which you can glean something about
an "ultra stable 10 MHz OCXO".  I couldn't see a GPS module on the board,
unless it's under the OCXO, but I doubt that.

Not sure what it's prime mission was for. My guess is cellular base station
timing. 

Interested to see what else come up from others in the group.

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Chris Albertson
Sent: 19 December 2011 04:41
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Another Trimble Thunderbolt-like GPS?

There are some Trimble GPS receivers on eBay.   They say "10Mhz 1pps"
but they are not Thunderbolts.  These are an A4 sized PCB, no enclosure.
The seller says it takes 48VDC to run.  Seems reasonable as there is a large
DC/DC power converter in the board.

Anyone know more?  How to they compare to the Thunderbolt?

Good photos at Auction #300628220912
-- 

Chris Albertson
Redondo Beach, California

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