breadtrk
Member
Looking at the spec's there is no preamp. To use the ext ant for better gain you would need to supply voltage to the coax.
Well there sure is no GPS firmware or hardware in the laptop, it all has to be in the ice cube. I think the coax I used was rg174? Not sure, it came from a friend that repairs hospital medical equipment. The antenna is the Larsen NMO mount triband gps. No voltage, jusr wire and solder and it works. Don't over think it guys, it is still just a reciever and antennna like any other, no magic.