[time-nuts] Truetime dc 468 goes sat rcvr simulator basics working

Bill Hawkins bill at iaxs.net
Mon Dec 6 21:35:33 UTC 2010


There are also a lot of GPS hockey pucks that send the NMEA codes
to map software in a laptop that are rapidly becoming obsolete.
NMEA is adequate for the 468 display.

Have three of them, to go with three NIB (except for the manual)
DC 468 receivers. Don't need any of them.

Bill Hawkins


-----Original Message-----
From: paul swed
Sent: Monday, December 06, 2010 3:13 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Truetime dc 468 goes sat rcvr simulator basics
working

Justin,
I might think quite a few time Nuts have these.
So making progress have build a gps sat message decoder for the GPRMC
sentence that gives time and data. I believe most GPS units put that
sentence out. Have it decoding time and next is date. Maybe tonight.
Then I have to glue this code into the simulator to set the clock.
Next will be a update subroutine which is quite tricky as to how the updates
done.





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