Hello. I need some help with a project I'm thinking of starting to do. I want to be able to transmit sound through radio from a transmitter to a receiver around a room's length away, kinda like a walkie talkie.
My problem is that I have zero understanding of analogue circuits. My idea so far is to feed my audio signal into a few audio opamps which will amplify the signal. Then, the output would be fed into the base of a NPN transistor, where the emmiter to ground through a resister. The collector would be connected to a high frequency signal generated by an oscillator. I'm hoping that the transistor would output an AM signal.
The receiver would compose of an antenna going into a band pass filter made from an opamp. The output of that would connect to the ground through a small capacitor to smooth out the high frequency oscillator signal. The result will feed into an amplifier, and finally to a speaker.
Can someone tell me if I'm on the right track here? I've looked up some circuit diagrams, and they seem pretty complicated. Is there a simple matching transmitter and receiver available that I can try out?
Thanks for your time!
My problem is that I have zero understanding of analogue circuits. My idea so far is to feed my audio signal into a few audio opamps which will amplify the signal. Then, the output would be fed into the base of a NPN transistor, where the emmiter to ground through a resister. The collector would be connected to a high frequency signal generated by an oscillator. I'm hoping that the transistor would output an AM signal.
The receiver would compose of an antenna going into a band pass filter made from an opamp. The output of that would connect to the ground through a small capacitor to smooth out the high frequency oscillator signal. The result will feed into an amplifier, and finally to a speaker.
Can someone tell me if I'm on the right track here? I've looked up some circuit diagrams, and they seem pretty complicated. Is there a simple matching transmitter and receiver available that I can try out?
Thanks for your time!