[Premium-Rx] RUBIDIUM FREQ STANDARD

[John Wilson]

Happy New Year Dave, and to all in the group. I was lucky enough to pick up
not only a Rubidium standard but all the backup equipment as well, including
the Tracor 900A receiver, a Tracor frequency difference meter, and another
secondary standard based on a 5MHz crystal source made by Austron, who have
been very helpful to me in providing supprt information even though they are
now part of a larger group of companies in Texas. It has taken me about six
months to get everything settled down, and once you get it all on frequency
you Never, Never, Never switch it off. I now know a lot more about the
difficulty of getting true calibration laboratory standards than I ever knew
before, so if you have any queries, just ask. Having my EMC test house
allied to a UKAS accredited calibration Lab helped a lot. When you are
chasing accuracy to 1 part in 10>-12 it requires a lot of patience, as well
as some head-scratching to decide where any drift may be coming from. I use
MSF on 60kHz, and I recommend that you do the same. Stay away from the BBC
on 198kHz because the use of Optimod processing means that you can never
quite get rid of the modulation, and of course the 198kHz transmitter is
also phase modulated at low level to provide switching information for
domestic consumers using Economy 7 electrical heating.
There's always something interesting to do, isn't there?
John
  -----Original Message-----
  From: premium-rx-admin at ml.skirrow.org
[mailto:premium-rx-admin at ml.skirrow.org]On Behalf Of Daiungoed at aol.com
  Sent: 01 January 2003 02:37
  To: premium-rx at ml.skirrow.org
  Subject: [Premium-Rx] RUBIDIUM FREQ STANDARD


  Hi,
      happy new year to you all, I have just bought a rubidium freq standard
to feed a few of my receivers, but, any offers on the best way to do it, the
standard has one output, and using a simple splitter seems not a good idea,
how about a multicoupler? Any ideas? thanks, Dave
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