🚀 go-pugleaf

Tim,

A closer look at wwvb reveals that it was wildly wobbling to and fro
in frequency where the rate of change in frequency varied up to
1000 ppm in an hour(!) I strongly suspect the radio simply lost signal,
which is not an uncommon event with these things, whereupon the
radio tracking loop went nuts. All timecode receivers have the problem
of what to do when the signal dies, which is common in WWV/H receivers
like PSTI/Traconex and Heath and to a lesser degree in WWVB receivers,
but most receivers (Heath excepted) can hold the fort to maybe a few
ppm over the loss interval. I have keenly observed the Traconex 
receiver, which commonly warps a few milliseconds near sunup and
sundown, the Spectracom 8170 and the True-Time GOES receivers, which
don't warp, but can wander a few milliseconds over a day under signal-
loss conditions. However, the wwvb behavior, assuming it was caused
by signals fading into the muck no silicon is broken in the circuitry,
is clearly beyond any reasonable nominals. I will take this issue up
with Spectracom.

Dave