FYI-
Here's a reply from my mother, a professional surveyor.
-glenn
K Powers wrote:
It's always been true for us that GPS has times of the day when either
there aren't enough satellites or the configuration is bad (high PDOP,
over 6). Last summer we had to take a GPS break from 11 to 12:30.
I've got this today from
http://tycho.usno.navy.mil/gpscurr.html
UNITED STATES NAVAL OBSERVATORY (USNO)
GPS CONSTELLATION STATUS
On Wed, September 6, 2006 18:16, Normand Martel said:
BTW, on all the 26 live stellites, only six (01, 08,
10, 24, 27 and 30) run on Cesium standards, all other
rely on Rubidium.
73 de Normand Martel VE2UM
Montreal, Qc. Canada.
The latest greatest SVs do not have Cesiums - only Rubidiums.
Hello fellows Time Nuts,
Following a question of mine here a few weeks ago about using a video
distribution amplifier for frequency reference distribution, and lots of
good advice I got in response, I just got one of those distribution
amplifiers from eBay and there are good news. The box is
I acquired a similar type of unit (sold as a VGA splitter) recently
for exactly the same purpose-it has three analog channels and a TTL
sync channel.
I have not yet done any tests on this box but it has a claimed b/w of
250 MHz in each of the video channels.
Interestingly the video amp is
