[time-nuts] using Fury GPSDO with Rb
SAIDJACK at aol.com
SAIDJACK at aol.com
Sun Apr 20 23:15:53 EDT 2008
Hello Ulrich,
This is so true. See Tom's phase noise tests of a Russian Rubidium prototype
disciplined by a Fury GPSDO. Lot's of times there is not much space to put a
good OCXO inside the Rb's case.
BTW: using the Fury's 1PPS input, that unit can be used as a cleanup loop
for dirty Rb's that have 1PPS outputs.
_http://www.leapsecond.com/pages/fury/phase.htm_
(http://www.leapsecond.com/pages/fury/phase.htm)
I just fired up my FTS1200-100 tonight for testing, it's dead on 5MHz. Does
anyone have a good circuit idea to go from 5MHz to 10MHz? I was thinking of
something similar to the HP5370B input circuit - basically a tuned amplifier
locking onto the 10MHz overtone.
bye,
Said
In a message dated 4/19/2008 06:33:21 Pacific Daylight Time,
df6jb at ulrich-bangert.de writes:
temperature related frequency changes in a typical flat. Given the fact
that most rbs's stability at short observation times is worse that that
of good xtal oscillators this makes the FTS1200 the best choice in my
GPSDO despite of owning an LPRO101 and an FRK-L.
Best regards
Ulrich
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