Hi:
I'm learning about the 60-Degree Pendulum Astrolabe:
https://prc68.com/I/PendulumAstrolabe.shtml
The idea is to mark the time when a known star crosses the 60 degree elevation
circle.
Is there an Android app where I could just push a button and have the local mean sidereal time recorded?
Not all the "holdovers" on the Trueposition are due to signal issues. Many
seem to be related to it tuning itself up after a power cycle and they improve
or go away after a couple of days of running.
But your antenna signal level map is rather awful... lots of red. It could be
antenna,
On Fri, Nov 30, 2018 at 8:56 AM Attila Kinali wrote:
> On Thu, 29 Nov 2018 21:22:44 -0700
> Mark Goldberg wrote:
>
> > How much could I expect ADEV to improve if I move the antenna to a better
> > location with clear view of the sky? The things I am testing need to be
> > better than 8e-10, so
I wonder if that "insult" was the inspiration for thermometers designed
around quartz resonators.
For more details on the new "accelerometer", one might want to read:
Hi
There are lots more issues to GPSDO stability than just antenna placement.
Indeed
you are correct that a location that keeps you out of holdover is a must.
Ideally you
want to be able to lock on to 4 sats at all times. That generally equates to
being able
to “see” something in the > 6 range
A little humor:
This situation reminds me of an old saying we had at HP:
How do you insult a clock engineer?
"Hey man, that's a great thermometer you designed!"
The new version of this is now:
"Hey man, that's a great accelerometer you designed". :-)
Rick
On 11/29/2018 8:06 AM, Bob kb8tq
