Gang,
You will remember a few years ago I had problems with my DATUM
9390-52054 GPS Time Code and Frequency Standards. For those that
were not involved at the time but might be curious about the history
of my grief with these units, I have included one of my epistles for
background purposes
Another update... I wanted to post more in the hopes that it may
help someone else with similar problems.
I told you about adding the simple voltage divider to reduce the
drive to the circuits following the replacement of the original
oscillator module. When I thought all was well I put the
On Sun, Apr 14, 2013 at 03:23:50PM +0200, Luciano Paramithiotti wrote:
> I have a 9390-53120. The 16.368 reference for the GPS is coming from a
> 4 pin (14 pin size ) oscillator on the GPS interface board.
> The other internal oscillator board mount a 1 MHz TCXO I never had
> seen locked to GPS.
>
From what you're describing, this is what I have, and this could
explain why I had trouble getting the unit to lock. Now that I've
replaced the 10 MHz oscillator, the receiver finds and starts
tracking satellites within about 3 minutes from an overnight off.
Burt, K6OQK
At 06:24 AM 4/14/2013
I have a 9390-53120. The 16.368 reference for the GPS is coming from a
4 pin (14 pin size ) oscillator on the GPS interface board.
The other internal oscillator board mount a 1 MHz TCXO I never had
seen locked to GPS.
Normally I use it only for UTC time display.
This GPS use an antenna with 50dB ga
On Fri, Apr 12, 2013 at 11:48:47AM -0700, Burt I. Weiner wrote:
> Sorry for the delay in posting this update. Things have been hectic,
> and then there was NAB.
>
> Here's what I've discovered: The receiver started working after
> about 6 hours of just sitting. However, the 9390's internal Ve
o.com
Subject: [time-nuts] UPDATE: DATUM 9390-52054 Grief again...
Sorry for the delay in posting this update. Things have been hectic, and
then there was NAB.
Here's what I've discovered: The receiver started working after about 6
hours of just sitting. However, the 9390's interna
Sorry for the delay in posting this update. Things have been hectic,
and then there was NAB.
Here's what I've discovered: The receiver started working after
about 6 hours of just sitting. However, the 9390's internal Vectron
oscillator was quite a ways off frequency and did not want to lock
