I strap my Nexus 7 to my kneeboard so a quick glance down is all I need to view the map.  However, in the last few flights SD has lost my position, claiming "waiting for location data", which in a C172 surprised me as the large windscreen rarely blocks the view of the sky.  On Friday I flew from Rochester to Panshangar with an uninterrupted track on SD, but the return flight was interrupted 4 times by loss of GPS.  I can't believe that travelling NW is better for GPS than travelling SE, so I'm assuming there is something wrong with where I keep the device in-flight.

All this is a long-winded way of me asking you fellow Nexus 7 owners where you put the device when flying?  Do you keep it on your knee, or mount it on the yoke, dash, or somewhere else?

Dave

I had the same problem recently flying back from Le Touquet. No problem there but on way back i only received a signal 50% of the time. I presume the answer is an external GPS receiver. I have seen one advertised on Amazon 

GlobalSat BT-359 Bluetooth GPS Receiver 
would this be suitable? Priced at £18.95.
If not does anyone have experience with any other devices?

I have flown 1000s of hours using various skydemon devices, and can confirm that not all pick up satellite data reliably. I have recently been trying a Tesco Hudl, which is pretty useless on the knee. The problem seems to be with the hardware. Sometimes devices just seem to have a weaker receiver than others. I have also found that a crowded cabin can also weaken the signal.

I guess an external GPS dongle could help, but have not tried one yet.