[time-nuts] Portable standard

[Mark Spencer]

So far I'm quite happy with the Temex LPFRS-01 I purchased from ebay.    

The unit I purchased uses a single 24 volt supply and came with a heat sink and 
a circut board with a trim pot to fine tune the frequency.   The connector on 
the board is a standard IDC style and the connectors on actual unit are also 
standard. 


The unit I purchased also appears to meet the published short term stability 
spec of 3 x 10-12 / 100 seconds for the "standard" unit.   




 


----- Original Message ----
From: Joseph Gray <jgray at zianet.com>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Wed, April 6, 2011 8:46:15 AM
Subject: Re: [time-nuts] Portable standard

As usual, lots of good replies and more links to things for me to read :-)

On the topic of rubidiums, I see three different brands on ebay. The
FE units sell for much more. What are the differences between the
three brands? Is the FE brand worth the price? Considering that these
are all used units, how long before the rubidium lamp is  dead? What
about powering these things? Any precautions?

Joe Gray
W5JG

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