I bought one a few months back and checked it on the move and at anchor - it was spot on the nose when anchored in Newtown river and seemd ok when under way. beauty is you can also use it in MS autoroute and a host of other applications on laptop. Needs to be mounted outside 'though to get good reception, and beware the magnet on the underside !
[ QUOTE ]
might damage the magnetic storage media of your computer - certainly floppies (or stiffies as we seth efricans call them).
Dont know if it would be strong enough to damage your hard drive though..
[/ QUOTE ]
I needed to erase a whole load of floppies for disposal. I found it completely impossible to erase a floppy disk using a permanent magnet - even with my seasearcher magnet which will lift 30Kg. Try it sometime you will see what I mean. I think it needs an ac signal
Any GPS that has NMEA / Garmin protocol will fir up to Autoroute / Mapping prog on a PC ..... you don't have to have the USB mouse type ..... I get along fine with my little eTrex ... and also have the display on the gps available in cockpit - while pc is chugging away down below !