[GPS_Standard] GPS_Standard Digest, Vol 39, Issue 1

Roberto Barrios rbarrioss at msn.com
Tue Dec 14 13:14:15 EST 2010



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Today's Topics:

   1. A bit of progress on my gps disciplined oscillator project
      (Chris Howard)
Hi Chris,

My GPSDO was built also with a Resolution-T and I did not use a level 
converter. Sure there are more correct and better ways to do it but I 
connected the GPS directly to the VE2ZAZ board and it has been working fine 
for a long time.

Good luck.

Roberto EB4EQA

----------------------------------------------------------------------

Message: 1
Date: Mon, 13 Dec 2010 13:33:14 -0600
From: Chris Howard <w0ep at w0ep.us>
Subject: [GPS_Standard] A bit of progress on my gps disciplined
oscillator project
To: gps_standard at mailman.qth.net
Message-ID: <4D0674FA.7030702 at w0ep.us>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed


I have made a bit of forward progress on my GPS-DO.

I finally worked up the gumption to gut out this old HP-5328A counter.
I bought the counter only for the oscillator.  The counter itself is very
dirty and doesn't appear to work right other than to read it's own
oscillator and display 10.000.000.

I gutted it out except for the power supply board.  The voltages look
good, and I think I will use this supply for my GPS-DO, at least
to get all of the pieces working together.  Then I will measure the
ripple and see if I need to make other power supply arrangements.

I have all of the main parts now:  Resolution-T GPS, RS232
level converter for the GPS, GPS-DO board, oscillator and power
supply.  It remains to be seen if I will have to boost the 1PPS signal from
the Resolution-T to integrate it with the GPS-DO board.


Chris
w0ep




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