Amplifier for AM receiver - Electronic Circuits Projects Diagrams Free

ua741 · 27th July 2004, 04:35 AM

I am working on an AM sender and receiver. The carrier is about 455khz.
The design of receiver has no problem and I receive the data. But selectivity of receiver is low, I mean, receiver doesn’t work from 2 meters far from sender. The desired distance is 100 meters . as you know 2 meters is a real disaster. How can I increase the distance?
My friends gave me some suggestions, like using a push-pull amplifier in sender or using amplifiers in receiver. What do you think? Do you have any schematics?

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27th July 2004, 04:35 AM	(permalink)
ua741	Amplifier for AM receiver I am working on an AM sender and receiver. The carrier is about 455khz. The design of receiver has no problem and I receive the data. But selectivity of receiver is low, I mean, receiver doesn’t work from 2 meters far from sender. The desired distance is 100 meters . as you know 2 meters is a real disaster. How can I increase the distance? My friends gave me some suggestions, like using a push-pull amplifier in sender or using amplifiers in receiver. What do you think? Do you have any schematics?