[aprssig] GPS 18 coordinates

[Gary]

Have you checked Garmin's technical manual for the 18? It's a free download
from them.
Gary

 

  _____  

From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Andrew Rich (Home)
Sent: Friday, August 07, 2009 10:23 PM
To: TAPR APRS Mailing List
Subject: [aprssig] GPS 18 coordinates

 

Hello

 

Doing some more work on a tracker here, in ASM for the 16F628

 

I worked out my GPS18 does degrees minutes and decimal minutes 

 

I am not sure what it will do in those areas where the degrees goes less
than 3 and two digits, as I am at -2700.0000 and 15300.0000

 

Can anyone help me to make my track "universal" by supplying some NMEA
examples of a GPS 18

 

At the moment I see

 

 2700.0000

15300.0000

 

My question is, does the GPS 18 zero pad ? when it gets to be smaller than
two digits, assuming 90 is the largest and 180 is the largest

 

,0600.0000, or ,600.0000,  (-90 to +90) 6 degrees

 

,08700.0000, or ,8700.0000, (-180 to +180) 87 degrees

 

,00800.0000, or ,800.0000, (-180 to + 180) 8 degrees

 

Andrew 

 

 

 

 

----------------------------------------------------------
Andrew Rich 
Amateur Radio Callsign VK4TEC
email: vk4tec at tech-software.net
web: www.tech-software.net

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