Originally posted by Andrew McLaren:
In Africa? A half naked runner carrying a letter tied to a forked stick has worked for a long long time! If the movie director is good the poor runner meats up with a prowling lion, or some other great man eating or stomping beasts!

In all seriousness: There are horses for courses! In many areas of South Africa cell phone reception is quit erelaible, and can be relied on in an emergency. There is, of course a fellow called Mr. Murphey prowling the african bush seeking PH's who do not have a Plan B!
Radio comms are as good as you are prepared to spend money on equipment - and license fees and BEE partners! Then there is always the "local Army" accusing the driver of any simple CB radio carrying vehicle of being an 'subversive element".

The amount of hassels involved in attempting to go about using radios across borders legally in southern Africa is quite enough to force all but the very strong to resort to bribery or "just keep quiet and take your chances" - tactics!
The ultimate - also in cost - is Satelite phones.
The norm about cell phone towers are: If you are desparate - there will be no signal! Trust Mr. Murphy on this one!
In good hunting.
Andrew McLaren.
In good hunting.