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[aprssig] 1. RE: THD7A GPS Question (Robert Bruninga)

Dave Baxter dave at emv.co.uk
Fri Feb 22 09:07:11 UTC 2008


Or downgrade the GPS firmware to an earlier version, if you can find
someone with such a file....
 
Dave G0WBX


________________________________

	From: Corrie Griffiths [mailto:corrie_griffiths at hotmail.com] 
	Sent: Wednesday, February 20, 2008 9:46 PM
	To: aprssig at lists.tapr.org
	Subject: [aprssig] 1. RE: THD7A GPS Question (Robert Bruninga)
	
	
	> > Not sure why you are seeing the blinking 
	> > but not getting valid position data. 
	
	I saw this very problem on an early revision TH-D7E - it was due
to the NMEA sentence from my GPS having positions with 4 decimal places
and the D7 only being able to handle 3 decimal places.  I proved this by
creating a PIC based lash up that stripped the 4 decimal place -
probably got the code somewhere if you are that way inclined. 
	
	I contacted Kenwood UK who were happy to upgrade the firmware in
my D7 - free of charge too - great service!  If you can locate an older
Garmin they have the shorter precision and should work OK.
	
	Regards
	
	Corrie
	M0XDK
	
	
	
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