[time-nuts] Z3805A high value PU

[Mark C. Stephens]

Dear Fellows,


I recently purchased a pair of Z3805A off eBay seller tommy_chou.

I have fired them up with a MaxRad 26db timing antenna attached to each.
The antennae have a clear view of most of the sky.
The receivers are having no problems seeing enough satellites.

The problem I am seeing on both is the predicted uncertainty is high compared to other receivers I have seen.

I am experiencing a PU of ~8us for the first and ~24us for the second.

My questions are,
What could be causing such bad figures?
Is it an oven problem?
Can I tweak it out?


Many Thanks,
mark