if anybady could help me with the transmitter for wireless microphone/guitar circuit.any suggestion on the circuit..i mean i need a circuit probably for tx and Rx..
If you build a FM transmitter in 88-108MHz band you will be able to utalize any FM radio receiver (subject to local RF regulations).
Here is a llink to a wireless FM microphone transmitter with detailed instruction on principle of operation and construction:
**broken link removed** you need to operate a microphone and guitar you can construct two of these amplifiers and tune one close to 88MHz and the other close to 108MHz ..
Regards,
IanP