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.
__________________
An Englishman, an Irishman, and a Scotsman walk into a bar. The bartender turns to them, takes one look, and says "What is this - some kind of joke?"
how to build fm transmitter...?
