[aprssig] gps18 usb

Scott Miller scott at opentrac.org
Tue Jan 13 12:40:36 EST 2009

Some USB GPS receivers can be modified to put out RS-232 - usually 
because they're using serial internally with a USB converter chip.  Not 
so for the Garmin types - they don't even speak NMEA over USB, they've 
got their own protocol.


Jan T. Pharo wrote:
> "Lynn W. Deffenbaugh (Mr)" <ldeffenb at homeside.to>, Tue, 13 Jan 2009
> 10:59:40 -0500
>>Remind me please, is this the GPS that is modifiable to do serial data?  
>>Or is it a USB-only GPS?
> USB is USB, and not a NMEA port.

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