[time-nuts] Papers on timing for lunar laser ranging
hmurray at megapathdsl.net
Fri Jul 7 18:14:08 EDT 2017
kb8tq at n1k.org said:
> Consider that in 1974, I could buy a nice new car for less than what a
> decent packaged 16 bit DAC cost. Go back into the 1960’s and you are up
> into the “several new cars” range. Even for NASA projects cost did make it
> into the equation ….
When was the first GPSDO shipped as a commercial product?
There is an interesting tradeoff in GPSDO design. With a specific DAC, you
can get finer steps if you reduce the tuning range. Has anybody built one
with a reduced range and a knob on the side to adjust the center point of
that range? You would have to adjust that knob occasionally as the crystal
you are tuning drifted.
These are my opinions. I hate spam.
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