[time-nuts] Question for the cesium nuts.

[Rob Kimberley]

Interesting question!!

Don't think we'll see an H2 MASER on EBay, as just too expensive, plus only
a few made each year. Rather large beasts - see the link below, and
installed & commissioned by manufacturer on site. The active ones are in the
$150K - $200K price range new, passive ones less. Symmetricom also make one
- the old Sigma Tau company down in in Alabama which FTS/Datum bought. I was
involved in bidding a Russian one last year in the UK.

http://www.kvarz.com/pdf/05%20CH1-75A.pdf (Active MASER)

http://www.kvarz.com/pdf/06%20CH1-76A.pdf (Passive MASER)

for further reading.

Rob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Hal Murray
Sent: 16 March 2007 20:51
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Question for the cesium nuts.

> The Russians seem to concentrate on H2 Masers (Kvarz, and Vremya).

Maybe we don't have to worry about cesium lifetime.  What are the
alternatives?

When will H2 Masers be affordable on eBay?  ...


--
These are my opinions, not necessarily my employer's.  I hate spam.




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