PSN-L Email List Message

Subject: Re: Garmin 45 GPS
From: "angel@chiriqui" angel@............
Date: Sun, 17 Jun 2001 06:31:36 -0500


Hello Bryan&Regina,

I interfaced a Garmin to a computer that was running a seismograph.
It's not hard.  Garmin puts out a standard NEMA sequence and you can
read it and set the computer clock.  The problem is that it is just
nowhere close to accurate enough if.  I actually think that the 45 puts
out the time every two seconds and even if it was every second it
would not be good enough to know that you clock is within two seconds
of the real time.  If you have a permanent connection to the
internet, DSL or cable for example you can get quite accurate time by
using a time server like Dimension 4 for example.  These programs go
check the time at very precise time stations and then reset your
computers clock. Then you I think you can set the SDR clock through
the serial port.

ángel

Sunday, June 17, 2001, 3:51:12 AM, you wrote:

BRG> Can I use the Garmin output with the current SDR program for timing? If not,
BRG> how hard would it be for Larry Cochran to add a patch to work with it? Or...
BRG> Any other suggestions for using the GPS to set and keep the time on the PC
BRG> updated.






-- 
Best regards,
 angel                            mailto:angel@............

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Larry Cochrane <cochrane@..............>