I built a heartly oscillator circuit that I can turn on and off to send morse code, the only problem is that I have nothing to detect it with besides an oscilloscope.

Simply put how could I make a CW receiver turn the incoming signal into a nice audible beep?

 

A simple piezo attached to the output should do. If you need more umph, add a transistor.

Do you have a schematic?

 

"What's the Frequency, Kenneth?"

If the oscillator is audio frequency then you could probably hear it directly, but if it is radio frequency then maybe not.

You might hear a change in the background hiss if you tried listening to received RF directly, but to get a nice clear beep, you'd probably need more circuitry.

You could mix the incoming RF with a local RF signal about 1 kHz offset from the received RF, then play the resulting 1 kHz signal through a speaker.

Or you could detect the RF signal, capture its rectangular envelope, then use that to gate a local audio oscillator on and off to play a beep through a speaker.

 

I built a heartly oscillator circuit that I can turn on and off to send morse code, the only problem is that I have nothing to detect it with besides an oscilloscope.

Simply put how could I make a CW receiver turn the incoming signal into a nice audible beep?

One method: Build an antenna that drives a tuned amplifier having a center frequency the same frequency as the transmitter. Have its output drive a trigger that turns a 1kHz oscillator on and off. This oscillator drives your earphones.

Another method: Build an antenna that drives one input of an active mixer. Buld another oscillator with a frequency 1000 Hz above or below the transmitter frequency. The output of the mixer should pass through a 1000 Hz filter and drive a 386 audio amp which in turn drives your headphones.

 

Hello,

What is the frequency you are trying to recieve?

You could take a look at a direct conversion reciever.
This can be made rather simple using a SA602 (NE602).
http://frrl.wordpress.com/2008/11/1...iver-making-friends-with-the-signetics-sa602/

Bertus