Ok here it is, I have an em-406 gps module that I would like to use for a high altitude balloon project. Is/are there unlock codes in the SiRF III chipset or with the EM-406 to unlock the 18kmeter/60kfoot limit. I would like to track the balloon upwards of 80k feet. I believe that the current unit w…

Em-406 GPS unlock codes

BigRedBee December 13, 2007, 5:48pm 9

I can positively confirm that the Lassen IQ works above 60K MSL.

– Greg