[GPS_Standard] HP oscillator slowly moving

[Chris Howard w0ep]

I've been running my GPSDO since May.
It seems to work well.  We have had a couple of power
outages and it gets sync'ed up again and continues on.

After some initial fiddling around to get the control
voltage near zero, I have just let it do it's thing.

The control number is now 00710, steadily sinking over
the weeks.

I'm wondering if this slow movement is a normal pattern?
My oscillator is an HP from an old frequency counter.

I have log files from most of the period this thing
has been in operation.  I put a local-computer time stamp
on each line, so in theory I could graph the
control voltage change if that would be of any use or interest.

I guess I'm kind of concerned about the oscillator and
wonder if I should try to acquire another.

Any comments?

Thanks!

Chris
w0ep