[time-nuts] Thunderbolt accuracy...??

[Michael Baker]

Hello, TimeNutters--

John Miles, KE5FX wrote:
 > Well, sure, it's more accurate than the undisciplined
 > OCXO in the counter, that's the idea behind the Thunderbolt.  :)

n3izn at aol.com wrote:
 > I just wanted to ask the group if the
 > Thunderbolt would be more accurate than the internal reference? I
 > want to think it is but my link to the thunderbolt spec sheet is
 > no longer valid.
-------------------------------------

Some time ago, I took my T-bolt over to the Metrology and
Standards Lab at the University of Florida and set it up
to run overnight and let it do its full survey process.

In spite of the fact that the antenna was in a rather poor
location it locked up quickly and seemed to run flawlessly.

The monitoring was only intended to look at the frequency
accuracy of the 10 MHz output-- other timing characteristics
so dear to Time-Nuts hearts were ignored.

After its overnight warm-up and survey process was done,
we found (over a period of 48 hours) that the 10MHz output
was never worse than 1.0 X E-12 and was generally better than
that by a considerable margin about 90% of the time.

Mike Baker
WA4HFR
Gainesville, FL