[time-nuts] Fix Trimble Oscillator??

[Chuck Forsberg WA7KGX N2469R]

I removed the defective Trimble oscillator module.
I suspect it is practically unrepairable.

I did have a Micro Crystal OCXO-BV5  left over from
a dead Odetics GPSDO.  I installed it after poking
around with a multimeter to locate the various
connections.

I had to add an inverter because the
sense of the control voltage is opposite to the Trimble
oscillator.  The inverter consists of a single high
gain NPN with a 39k to +5v, 100k feedback, and
220k to the DAC output.

The attached GIF shows the Thunderbolt 10 mHz ppb
after initial stabilization.  At 2400 I blasted the receiver
with a duster.  For the second event I gave the power
supply a blast from the duster.

-- 
Chuck Forsberg WA7KGX N2469R     caf at omen.com   www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
   Omen Technology Inc      "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231   503-614-0430

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