Hi,
In NT I have seen two public hot spots set up in areas of zero bars on the phone.
They are just a 1m^2 plate steel mounted up a pole, reflecting a signal from a remote tower. This is collected by a satellite dish closer to the ground.
To use it, turn on phone, dial, put it on speaker phone, place the phone on the small ledge at the focus point of the dish and stand back a meter or so.
Bingo, 3 bars from nothing.
An old dish should be easy enough to locate and mount in a fixed location.
Cheers
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