Paul
The keyword is GPSDO - GPS disciplined oscillator. The vast majority of
these will give a 10MHz output. The long term accuracy is the same as
the GPS navigation system, which for most purposes is similar to that of
national standards. GPSDOs are more stable than most rubidium standards
in the long term, and GPSDOs are extremely common in most laboratories.
The Trimble Thunderbolt is very common and available on the surplus
market, as is the HP Z3801A. James Miller (G3RUH) used to sell an
excellent GPSDO. There are other home-brew designs available if you
want to build. These have all been extensively characterised if you
want the details.
If you want to buy new, then there are products such as the Fury and
Firefly from Jackson Labs; , U-Blox have many offerings (not sure if
they do a GPSDO though).
Google GPSDO or GPS frequency standard, or check the leapsecond.com
website for more information - there's loads out there, it's just a case
of using the right term in the search engine.
regards
Grant
Date: Sun, 3 Feb 2019 23:43:10 -0000
From: "Paul Bicknell" <p...@bicknells.f2s.com>
To: "'Discussion of precise time and frequency measurement'"
<time-nuts@lists.febo.com>
Subject: [time-nuts] 10 mhz accuracy for a satellite system
Message-ID: <D1F28D64EDD440EC834753538090F381@precision380>
Content-Type: text/plain; charset="iso-8859-1"
Dear all
I currently use a 198 Khz off air standard but I can no longer use 600 khz
since it moved from Rugby
I have herd a lot about varies frequency references that use satellites
This technology has improved immensely & become more affordable over the
past 5 years
So can a standard locked to a satellite be as good as a Rubidium ?
What accuracy can I achieve for a satellite system below ?800 as I am not
familiar with the latest that are on offer?
Regards Paul Bicknell South Coast UK
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