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418/433 MHz Transmitter/Receiver Circuits

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metal

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Hello

Can any body help me with crystal based 418/433 MHz schematics that can be easily built, I need them badly.

Thanks in advance
 

Google. There ae plenty of designs for crystal controlled FM transmitters for the 430-440MHz amateur radio band on the web. **broken link removed**

You should have a wavemeter to check that the output of your transmitter is clean and will not cause interference to other radio users.
A frequency counter and a radio scanner would be very usefull.

There are lots of IC's available such as MAX1470 receiver.
 

Hi;
Read texts about communication circuits and design circuit.
 

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