well send the hex didn't work or it did not send!
turning off the PUBX & UBX stops it switching to Putty confirmed this, however unplugging the GPS and re connecting it and it is back to the original issue.
Lee, I 'm not 100% sure that this is the issue, if i plug the Ublox into the PaW it gets a gps fix showing on the home screen
As can be seen from PaW log below.
The issue was why it was dropping the fix in flight and why it doesn't get a fix in the house when connected to the Pi but does when in does when plugged in to a PC? I'm thinking it may be EMF from the PI?
Log from Pi
(15:40:28) GPS-NMEA : GPS-USB: $GPGSV,3,2,12,21,53,164,22,23,09,304,18,25,16,123,22,26,69,287,39*77
(15:40:28) GPS-NMEA : GPS-USB: $GPGSV,3,1,12,05,16,047,29,09,07,335,,16,39,297,30,20,20,096,32*75
(15:40:28) GPS-NMEA : GPS-USB: $GPGSA,A,3,26,21,29,31,16,20,25,05,23,,,,1.68,0.93,1.40*0A
(15:40:28) GPS-NMEA : GPS-USB: $GPGGA,154030.00,5244.47620,N,00033.00795,E,1,09,0.93,12.8,M,45.8,M,,*65
(15:40:28) GPS-NMEA : GPS-USB: $GPVTG,,T,,M,0.060,N,0.111,K,A*24
(15:40:28) GPS-NMEA : GPS-USB: $GPRMC,154030.00,A,5244.47620,N,00033.00795,E,0.060,,160517,,,A*7A
(15:40:27) GPS-NMEA : GPS-USB: $GPGLL,5244.47619,N,00033.00784,E,154029.00,A,A*63
(15:40:27) GPS-NMEA : GPS-USB: $GPGSV,3,3,12,27,11,253,,29,46,068,34,31,38,204,28,39,26,150,30*77
(15:40:27) GPS-NMEA : GPS-USB: $GPGSV,3,2,12,21,53,164,22,23,09,304,18,25,16,123,22,26,69,287,39*77
(15:40:27) GPS-NMEA : GPS-USB: $GPGSV,3,1,12,05,16,047,28,09,07,335,,16,39,297,29,20,20,096,34*7A
(15:40:27) GPS-NMEA : GPS-USB: $GPGSA,A,3,26,21,29,31,16,20,25,05,23,,,,1.68,0.93,1.40*0A
(15:40:27) GPS-NMEA : GPS-USB: $GPGGA,154029.00,5244.47619,N,00033.00784,E,1,09,0.93,12.6,M,45.8,M,,*69
(15:40:27) GPS-NMEA : GPS-USB: $GPVTG,,T,,M,0.113,N,0.209,K,A*2B
(15:40:27) GPS-NMEA : GPS-USB: $GPRMC,154029.00,A,5244.47619,N,00033.00784,E,0.113,,160517,,,A*7D