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sorry to correct you, but the 900 MHz licensefree radios, the cellular radios (analog and digital) and Modacom and Mobitex are all different animals. i don't want to go into details though, because it doesn't change your main point, the ability to localize one of these radios while transmitting. Andreas
On Fri, 13 Jan 1995, Andreas Elbert wrote: > sorry to correct you, but the 900 MHz licensefree radios, the cellular > radios (analog and digital) and Modacom and Mobitex are all different > animals. > i don't want to go into details though, because it doesn't change your main > point, the ability to localize one of these radios while transmitting. However, if there are a large number of 900 MHz radio modems operating in a cryptographically secure spread-spectrum method, it may be very difficult to locate your particular transmitter...however the modem you are talking to will know your pseudonoise sequence, and a receiver that knows this will have a much easier time tracking you down. -Thomas