I have been involved with data terminal installations in corporate aircraft, using the 64K service offered by Inmarsat. Ping times are typically 850-1000ms, which is just over the physical limit imposed by geo satellites. Not really sure why you were seing such high latency with Connexion. The new service being auctioned now by the FCC will be a ground-based system, so latency will be much lower.
I have been personally involved in wifi certifications in aircraft. I have never seen any interference with navigation systems. I attribute this to the low rf levels of wifi. Not so with cell phones, their much higher transmit levels can cause all kinds of havoc with communication/navigation. I have seen cell phone use in the cockpit (of corporate jets) cause the cockpit audio to go nuts. The upcoming certification of cell phones in the air all center around "picocells", which force the cell phones to transmit at lower power by associating with the on-board picocell and not with on-the-ground cell towers. I am doubtful that picocells will actually get certified, as it all hinges around sucessfully keeping the cell phone's power at a minimum, which may be very difficult in practice.
Jpilot works GREAT for syncing Palm devices. It runs on top of pilot-link and I have found it to be very reliable on the RH8, RH9, and now Gentoo machines I run.
Terry
The Aceeca Meazura is waterproof, ruggedized, runs Palm OS, and is very inexpensive at US $349. It is designed for industrial applications and uses plug-in modules for customer hardware. I've been designing test equipment, and looked a long time at all the alternatives. The Aceeca was hands-down the most inexpensive. It is -very- easy to develop custom hardware for this unit.
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I have been involved with data terminal installations in corporate aircraft, using the 64K service offered by Inmarsat. Ping times are typically 850-1000ms, which is just over the physical limit imposed by geo satellites. Not really sure why you were seing such high latency with Connexion. The new service being auctioned now by the FCC will be a ground-based system, so latency will be much lower.
I have been personally involved in wifi certifications in aircraft. I have never seen any interference with navigation systems. I attribute this to the low rf levels of wifi. Not so with cell phones, their much higher transmit levels can cause all kinds of havoc with communication/navigation. I have seen cell phone use in the cockpit (of corporate jets) cause the cockpit audio to go nuts. The upcoming certification of cell phones in the air all center around "picocells", which force the cell phones to transmit at lower power by associating with the on-board picocell and not with on-the-ground cell towers. I am doubtful that picocells will actually get certified, as it all hinges around sucessfully keeping the cell phone's power at a minimum, which may be very difficult in practice.
Jpilot works GREAT for syncing Palm devices. It runs on top of pilot-link and I have found it to be very reliable on the RH8, RH9, and now Gentoo machines I run. Terry
The Aceeca Meazura is waterproof, ruggedized, runs Palm OS, and is very inexpensive at US $349. It is designed for industrial applications and uses plug-in modules for customer hardware. I've been designing test equipment, and looked a long time at all the alternatives. The Aceeca was hands-down the most inexpensive. It is -very- easy to develop custom hardware for this unit.