What is the most cost effective approach for an individual that travels extensively into isolated areas of the world to be able to maintain telephone contact to anywhere else in the world?
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"Consensus Science got us into this mess, then why can't it get us out?" : Rephrase of Will Rogers Comment
Assuming you don't have time to get your ham radio ticket, here's what I'd do:
If you are travelling in areas with cellular network, get a GSM/CDMA dual mode phone (do a search Motorola GSM/CDMA). If you are really remote, then your left with satellite phone as your option.
To reduce cost, use text messaging instead of incurring long distance charges.
I can't help with the comms problem but the people problem.....
There are an infinate number of types. Why well how long is a piece of string.
Those who succeed, fail, try, can't be bothered, know it all, are uselees, teach, learn, help, hinder, give advice, take advice, the willing the un-willing, those who pay those that scrounge, the lazy, hard working, charitable, mean, ad infanitum. And all the mixes of them. The rich, the poor, the haves, the have nots, It is endless.
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There's them that knows and them that just thinks they know, whitch are you? Stir the pot and see what rises up. I have catalytic properties I get a reaction going.