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It isn't totally free, just "free of direct user fees". Manufacturers are charged a licencing fee, which they pass on to us in the cost of the units. Also the software in each unit is the property of the US Defense Dept and cannot be modified - so we are stuck with civilian accuracy.Despite the high costs, use of it is free for civilian purposes worldwide
GLONASS was suspended for a while, so of course coverage is limited. However, with the new satellites going up, they will have good coverage and this year, civilians will have the military signal accuracy!But Glonass lacks Navstar’s wide coverage
NAVSTAR have exactly 31 satellites in place. In fact today ALL 31 were providing navigational data.a network of two dozen medium-earth orbit satellites
I'm sorry Duncan gave Avnic some publicity because their price markup on Garmins is huge. It would be much cheaper to buy these units abroad.GM of Avnic Trading, which imports and distributes Garmin’s market leading GPS devices