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#8
March 14th 05, 04:18 AM
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Bill Daniels wrote: "Marc Ramsey" wrote in message m... Bill Daniels wrote: This seems a far better idea than built-in 121.5 MHz ELT's. http://www.vpos.no/ I wonder if it could work in the USA. A different GPRS module would be required for US frequencies. Digital signal coverage is sparse in wilderness areas here. I've also noticed that even in areas with coverage, GSM signals can't be received much over 5000 ft AGL, whereas analog cell signals work to at least 18K. Base station antenna technology must have improved... Marc How about something like packet radio? I understand the ARRL has a pretty widespread network. Bill Daniels 
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