HOMEBREW
One-hour/one-dollar
project, MORSE TRAINER.
| This is a morse trainer for morse transmitt
exercising. I use a telephone speaker and a 74HC14 as oscillator. The key is made of a saw and a radio knob. Most of the parts come from the junkbox. |
| Dette er en
morsetrener for å trene sending. |
Underside
The oscillator is one of the six inverters in the 74HC14.
The five other inverters are
used as power amplifier for the speaker. A telephone speaker is
used as speaker.
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