Thread: Homebrew GPSDO
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Old 22nd Feb 2021, 5:46 pm   #2
Al (astral highway)
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Join Date: Nov 2006
Location: London, UK.
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Default Re: Homebrew GPSDO

Originally Posted by mole42uk View Post
Here's some pictures of my GPSDO.

That's a great project, Richard. I've been following this with interest as I find this kind of thing fascinating.

Originally Posted by mole42uk View Post
In the images below, the front panel "Locked (1 pps)" lamp is simply a 'heartbeat' - if the system is running correctly that lamp flashes at 1Hz. The front panel 10MHz output socket is a buffered 50Ω feed to any equipment that needs it. The Jupiter GPS receiver is ex-military equipment and is the TU30-D400 version which uses 3.3V power but outputs directly to the 5V TTL on the Veroboard. The OCXO is another ex-military pull that has a pretty good specification, and the manufacturers in the USA still answer email enquiries about it!

That's pretty ingenious and it looks great, too. Thanks for sharing!
Best wishes, Al

"Plans are useless but planning is indespensible..." (Eisenhower).
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