Hello:

I have recently expanded the Coordinated Universal Time (UTC) page on my web
site (http://www.spacearchive.info/utc.htm).

I would appreciate it if you would carefully read the page for technical
accuracy and send me your comments.

Regards,

Brian W., KD6NRP

Brian Webb wrote:
Hello:

I have recently expanded the Coordinated Universal Time (UTC) page on my web
site (http://www.spacearchive.info/utc.htm).

I would appreciate it if you would carefully read the page for technical
accuracy and send me your comments.

Regards,

Brian W., KD6NRP


Brian,
What I read of it looked good. On your section on GPS time, you might
note that GPS time does not include the leap-seconds that clock time
does. I believe that there are now 14 leap seconds difference between
GPS time and clock time, but that should be verified (it might be 16).
The handheld GPS receivers I have seen, correct for the difference
before displaying the time. Industrial units may provide either at your
option. I believe that you can get 50 nS accuracy out of the industrial
units (specifically the old Motorola Oncore series).

Regards,
Bob
KE7FEF

MetalHead wrote:
Brian Webb wrote:

Hello:

I have recently expanded the Coordinated Universal Time (UTC) page on
my web
site (http://www.spacearchive.info/utc.htm).

I would appreciate it if you would carefully read the page for technical
accuracy and send me your comments.

Regards,

Brian W., KD6NRP


Brian,
What I read of it looked good. On your section on GPS time, you might
note that GPS time does not include the leap-seconds that clock time
does. I believe that there are now 14 leap seconds difference between
GPS time and clock time, but that should be verified (it might be 16).
The handheld GPS receivers I have seen, correct for the difference
before displaying the time. Industrial units may provide either at your
option. I believe that you can get 50 nS accuracy out of the industrial
units (specifically the old Motorola Oncore series).

Regards,
Bob
KE7FEF

I was curious and looked it up, as of Jan 1, 2006 GPS time leads clock
time (UTC) by 14 seconds. There is a good web page he
http://tycho.usno.navy.mil/leapsec.html

Regards,
Bob
KE7FEF