NF-3743 Code Practice Oscillator w/ Screw Terminal

This Code Practice Oscillator Kit is a very popular and practical device used in Ham Radio for practicing your Morse Code. It is designed as a One-Transistor, Twin-Tee, Audio Phase-Shift, Sinewave Oscillator with an Audio Amplifier on the output.

The kit produces a very clean sinewave of either 700Hz or 1000Hz. You will get the parts to build either frequency. Note: 700Hz is extremely popular and very pleasing to the human ear.

The input is a 1/4" phono jack while the Speaker output & 9v Power input each use a 2-pin screw terminal. You can mount the PCB via the 1/4" phono jack directly on a panel, such as a Speaker Box.

Plug your existing key or "bug" into the 1/4" phono jack or wire it in directly and leave the phono jack out, your choice. You can even put in a momentary switch of your choice. The input requires a switch to ground to produce a tone.

The PCB is 1.0" x 2.0" and is very easy to build.

This kit does not include a battery nor a speaker. This kit does not include the tools you will need to assemble the circuit. You will need tools such as a soldering iron, solder, wire cutters, etc. To assemble the kit, open and print the Schematics and the Parts List below. The General Instructions are helpful notes.