Nevada Space Grant
This is the GPS we include in our cutdown payload. It's very lightweight.
It costs $50 if you buy it without the development kit.
Very lightweight because it's just the GPS circuit board and an antenna. No LCD or battery.
100 mW @ 3.3V
Operating temp -40° to +85°C
Only 1"x 1" x 1/4"
Only takes between 3.0-3.6 VDC
Hard to tell if and when it's working because their is no LCD.
Doesn't have a built in antenna. So you need to include a trailing antenna which doubles the size and mass.
Outputs TTL level voltage and signal so if your equipment works off of serial you may need to get a circuit to boost the voltage level to RS232 levels.