Posted 11/20/2013 17:19 (#3457296 - in reply to #3453569) Subject: Re: pro 700 ground speed?
On a buffalo-style antenna (252, 262, 372) pin 7, port C should be the wire to get radar output. Turn it on through your RDI setups, and wire it into whatever you have that needs GPS speed input. Then match up the frequencies until it is accurate.
If you need more specifics, what are you getting gps speed from and what is it going into?