[time-nuts] Newby with questions

[David VanHorn]

The 24 GPS satellites are in orbits that never pass over the  poles.
I think they are about 60 degree inclinations.   By your description
you must be in the northern hemisphere.  If you can,  set up your
antenna so it can see to the south and don't worry if the view of the
north is blocked because as you found there is nothing to see there.


I see!  So I could move the antennas closer to the north side of the skylight, letting the skylight wall on the north side get up around 60 degrees, so that my view to the south is more optimized. 

I also see the notes on the temp sensor, just ordered some rev C parts that I can change out here as needed.


I'm going up on the forklift today to connect the second feed (didn't have enough adaptors Friday for N-F) and I'll nudge the positioning a bit, then I can do the survey on the other antenna.


I understand that the Tbolt should be giving me WAY better than 1PPM, but that's exactly what I wanted.  Until I started pushing this issue, we didn't calibrate anything, and our test gear was in constant disagreement.  If you can't measure it, you can't improve it, and I'm tired of measuring with unmarked string.. <VBG>

My next problem to solve, is distributing the signal through the production floor. I won't need phase accuracy between the drops, but I don't want to induce any significant error.  My initial thought was simply to amplify and split like CATV drops, but I'm seeing that this may not be the best approach.  I have a 75 ohm video distribution amp on order that will serve my immediate needs, maybe something better later on.

Question:  Is there a way to have the Tbolt shut off the 10 MHz output if it is not reliable? I'd rather have no signal than an unreliable signal.