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voice activated FM transmitter which transmits at 160.7 MHz

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chikedef

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help: voice activated FM transmitter which transmits at 160.7 MHz

l wish to design a voice activated FM transmitter design which transmits at 160.7 MHz. l intend to implement my design using two or three transistors that is oneor two for amplifying and the other as part of the colpitt's oscillator. the transmitter has a range of 100m hence transmitts less power.

the transmitter must transmit only when someone speaks, the microphone, in this case an electrect is to be used as the transducer otherwise it must be in an idle state
 
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chikedef

New Member
frequency

my partner is designing the receiver. thats the frequency l was allocated by the regulatory authority. if you can help how do l go about it?
 

Nigel Goodwin

Super Moderator
Most Helpful Member
my partner is designing the receiver. thats the frequency l was allocated by the regulatory authority. if you can help how do l go about it?

Check out radio amateur 145MHz designs (and go from there) - a crude 'bug' type circuit will NOT be suitable, and would not comply with the licence requirements of the allocation.
 
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