Is there anyway to transmit morse code using a standard two-way radio?
Is there someway that I could hook a telegraph key up to a two-way radio (aka motorola hand-held) and transmit morse code? Thanks for input and ideas.
Wire your telegraph key in parallel with the switch under the push-to-talk (PTT) switch. In radios designed to transmit Morse code, the final amplifier stage is alternately normally biased or driven into cut-off. The transmitting of real Morse code is just sending an unmodulated carrier.
Toy radios with built-in Morse code buttons send a tone over the radio when the button is pushed. For this you would have to make a tone oscillator. This can be as simple as a 555 timer and a few parts. This signal, at very low level is wired into the mic, external mic input if available. The advantage of this is that nothing special has to be done on the receiving end.
Yes. It is possible to key an audio tone applied to the input from the microphone. This then would make it MCW which is frowned upon. Other way is to key via the pressel switch. This will turn the carrier on/off but most likely will be slow as the pressel circuit is not designed for keying. You would need to disconnect the microphone input in order to stop background modulation. It is a bit harder to receive the signal, though. You did ask if you can transmit, not receive.
References :
Wire your telegraph key in parallel with the switch under the push-to-talk (PTT) switch. In radios designed to transmit Morse code, the final amplifier stage is alternately normally biased or driven into cut-off. The transmitting of real Morse code is just sending an unmodulated carrier.
Toy radios with built-in Morse code buttons send a tone over the radio when the button is pushed. For this you would have to make a tone oscillator. This can be as simple as a 555 timer and a few parts. This signal, at very low level is wired into the mic, external mic input if available. The advantage of this is that nothing special has to be done on the receiving end.
References :