[GPS_Standard] GPS lock board for rubidium steering

[Bertrand, VE2ZAZ]

Hi Mark,

I assume that you are refering to our GPS-Derived Standard system as the
"locking circuit" here. I am not an expert in the matter, but here is my
understanding of the situation.

Rubidium oscillators achieve a better long term accuracy and aging rate than
crystal oscillators. This is why these oscillators are used often as free
running references (no GPS stuff). If tied to our GPS standard, these
characteristics would theorically allow a much longer Sampling period
(S-parameter), and thus would allow to improve system accuracy even further.
BUT, my guess is that trying to steer a rubidium source is probably overkill
with this system. The system has hardware limitations that would probably
make you lose much of the benefits of your rubidium source. Hey, be my guest
and try it out! It will work for sure, but will it work better than an
OCXO?...

Bert, VE2ZAZ

----- Original Message -----
From: "Mark GM4ISM" <gm4ism at blueyonder.co.uk>
To: <GPS_Standard at mailman.qth.net>
Sent: Wednesday, November 22, 2006 6:23 PM
Subject: [GPS_Standard] GPS lock board for rubidium steering


Hi,  has anyone tried using the locking cct for steering a Rubidium?

I just got a 5 MHz rubidium source designed for external GPS steering (but
not the GPS locking system)
not got any data on the thing yet, but be interested in hearing of any
experiences, or comments on the possibility.

regards
Mark
GM4ISM
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