Posted by Dave Thewlis on November 19, 2001 at 16:25:09 from 148.78.249.10:
In Reply to: Re: SandA WDMTGTS GPS posted by Jon on November 19, 2001 at 16:16:21:
It's worth noting that most of these application, where a GPS receiver is coupled with some form of radio technology to send locating (and other) information, are not of course using the GPS system for the response, but something else such as cell phones. Even when satellite phone technology is used I don't think it is the GPS satellites handling the up-link.