[time-nuts] Newbie questions

[Jim Mandaville]

>Run away while you still can? :-P
>
>-- john, KE5FX


Nope, not ready to run away by any means, John!  And I do thank you 
much for your time in these helpful comments.  Thanks also to Tom for 
that somewhat different scope method.  I was indeed wondering about 
that short-term stability issue  when making quick "point-in-time" 
frequency measurements.  You have clarified my thinking on this.  My 
conclusion now is that there is not much point in trying to adjust 
the LPRO to the TBolt frequency when the difference, as now, is only 
0.001 or 0.002 Hz  I should just probably make comparisons once in a 
while to check the LPRO for aging rate, etc.

But what about making comparisons with the counter using very long 
gate times, such as 1000 seconds.  Wouldn't that make things more 
accurate.  Or would I still be limited by the counter (obviously I am 
still limited by the number of digits being displayed).

By the way, I noticed that the blurb for that just-announced (here) 
TBolt-disciplined LPRO is "adjusted at the factory for down to 0.1 
ppb accuracy"   That is just about the limit of accuracy I see for 
the indicated 10 MHz output on the TBolt monitor (although for much 
of the time mine seems to run somewhat better than that).

Jim