The PM446 series of walkie-talkies will go to 5km in open country for 0.5W PEP at 446MHz. They retail for about £35GBP the pair. They are exempt from transmitter licensing in the UK provided they are unmodified.
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The elephant is a funny bird. It flits from bough to bough. It lays its eggs in a rhubarb tree and whistles, like a cow - Spike Milligan.