On Sat, 19 May 2012 21:20:26 +0100, "Ian Field"
wrote:

Incidentally, I'm building my own 10MHz GPSDO for running my test
eqipment and ham junk. It's NOT a trivial or inexpensive exercise:

A while back (I think it was) EPE magazine (or might have been Elektor)
published a GPS frequency standard generator projects.

There are plans all over the internet. Almost all of them use the
Rockwell Jupiter board, which has a convenient 10KHz output. That
would normal be the way to go, except that I have a large pile of
Novatel Allstar 12 boards, which have 1Hz and 10Hz outputs. That
makes the design somewhat more complicated.

Its available as a kit, so although not particularly cheap it is fairly
easy.

Complete GPSDO modules can be found for about $300.
http://www.navsync.com/GPS_timing.html
http://www.navsync.com/docs/CW46_prod_brief.pdf
I'm building mine much the same way, with integrated antenna, etc.

The 1pps output can be used to run a digital clock, but I would hate
to see the final cost.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558