EFY's Electronics Design Community - An good discussion on how to build Walkie-Talkie and Radio Receiver and also find the schematic diagram of them. Check this out: http://forum.electronicsforu.com/forum/technologies-work/communications/1128- walkie ...
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Block Diagram of the System – EE Proto: Walkie Talkie
How to make wireless phone set easy at home - with circuit diagram - walkie talkie - YouTube