[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

Anthony Roby aroby at antamy.com
Sun Oct 26 18:24:29 EDT 2014

Hal - there's nothing coming out of those connectors.  I'll explore again once I can get my GPS connected to the unit and see if that changes anything.

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Hal Murray
Sent: Sunday, October 26, 2014 4:11 PM
To: Bob Stewart; Discussion of precise time and frequency measurement
Cc: hmurray at megapathdsl.net
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z3812...

bob at evoria.net said:
> Thanks for more pics.  Was there any indication of where the 10MHz 
> gets its signal?  Could you see a trace, or did I miss that in the 
> pics?  I'm a bit too ham-fisted to go prodding around in mine, so I've 
> left it closed after an initial urge to see the top of the board.

If you look carefully at the pictures showing the bottom of the connector area on the 10 MHz and Antenna connectors you can see that the connectors don't share any mounting/connecting holes on the PCB.

If you want 10 MHz out of the unit with the GPS module, you can get it from the center pin of the unused connector.  (You may have to add other parts to get 10 MHz over there.)

An alternative migh be to move the antenna connector on the GPS module from the bottom to the top, then use a pigtail lead to the panel.  That may not work.  From the pictures, it looks like power to the antenna is added to the trace on the bottom of the board.

These are my opinions.  I hate spam.

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