A few months ago i purchased a pair of Rockwell micro tracker GPS receivers from ebay.
It's only now that i've had chance to play with one...

I have wired up a MAX232 and all is functioning correctly.
I wired in a single LiPOL as battery backup for the GPS unit as recommended in the datasheet...
the datasheet says that first fix can take upto 15 mins from a complete power down so i left it connected to a USB to serial cable on my laptop with realterm running.
When i come to go bed the only thing in realterm was the standard 'hello' NMEA string that it left upon power up.

Code:
$GPGGA,,,,,,0,00,,,,,,,*66
$GPGGA,,,,,,0,00,,,,,,,*66
$GPGGA,,,,,,0,00,,,,,,,*66
$GPGGA,,,,,,0,00,,,,,,,*66
$GPGGA,,,,,,0,00,,,,,,,*66
i left it over night and it still hasn't started spitting out NMEA strings...
The antenna is sat on my window ledge i'm guessing it can't find enough satellites???
Unfortunately, the manual is crap, but does anyone know a way of getting it to tell me what it is doing?

Thanks