[time-nuts] thunderbolt "no UTC offset"

[Magnus Danielson]

On 05/01/2012 10:30 PM, Tom Van Baak wrote:
> The UTC offset is in words 6-10, page 18, subframe 4 -- every 12.5 minutes.

It was added to the broadcast signal as an after-thought, as a separate 
upgrade package if you wish. At least back then, I believe they had USNO 
to measure the GPS time and provide corrections to match up with USNO 
UTC scale. It makes sense that they still do that. The publish 
differences is really just a hand-full of ns. The GPS time is to be 
maintained within +/- 1 us of the USNO UTC time-scale according to 
original setup.

Does anyone has any more recent descriptions on this? Besides the track 
record being available from USNO or for that matter the BIPM.

Cheers,
Magnus