Hi All,

Thanks for the questions - here are some answers:

1) Re indoor GPS acquisition, we have been unsuccessful in finding an indoor location where the new 5Hz GPS will NOT acquire. I am sitting here now on the bottom floor of a 2 story house, surrounded by trees, and am getting 8 sats in view and a 3D fix. Hot fix in this location takes 1-3 seconds. We've had similar experiences in our offices and in the homes of our beta testers. The reason is the GPS module's enhanced "real-world" sensitivity coupled with its ability to sort out true satellite signals from multipath, RF noise, etc. Even sitting next to two operating cellphones, a cordless phone, and our 900 MHz telemetry transmitter (in high power mode) in the same indoor spot, performance is not degraded. My Garmin and other GPS units we've tried have not come close to this.

2) Re vertical speed measurement, this depends on a variety of factors. All GPS units measure X and Y coordinates best, and the Z coordinate, i.e., altitude (which is the hardest to compute) second best. But, all our data systems have either built-in or optional high-sensitivity airspeed sensors and altimeters, which can be used, in conjunction with the change of X/Y position, to much more accurately compute dive speed. Our Pro system has 1 foot altitude resolution (and also supports retrieving Jet ECU data) so they are perfect for this. It will be very easy for us to add a "computed speed" based on latitude/longitude and altitude change, which can be compared directly to the airspeed, and/or the speed computed by GPS.