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They are properly designed so that they do not transmit harmonics and they have a powerful RF amplifier and a very sensitive receiver.Those walkie-talkies used by police and army have long range, why is that guru?
the length of the aerial is determined by the freq13km range with that little aerial??? Kinda hard to believe
The length of the aerial is determined by the radio frequency. Walkie Talkies for kids use 27MHz so their antennas are long.13km range with that little aerial??? Kinda hard to believe
Higher frequencies are not easier to receive.so are higher frequencies easy to recieve? Why is that guru?
So since we're off on a tangent anyway (line-of-sight vs bounce transmission), is that why FM (88-108MHz) is line of sight, unlike broadcast AM (55-160KHz), because FM is higher frequency? or does it have something to do with the method of modulation? (I always thought the latter, but obviously have no formal schooling in this RF-type stuff.)
pls give me this diagran and pcb lay out soon
The fact of the matter is that making your own radio transmitter is illegal without the government certifying it.