Special Edition' Morse Code Oscillator and Amplifier with Custom Green and Clear Case.Now includes a plug compatible battery clip, see photos.
Practice your Morse code with a true to life (Morse life) oscillator. Suitable for straight (non-iambic) keys only. Utilizing a Twin T oscillator, you get a note at around 950 - 1000 Hz, very similar to  on air or side-tone Morse.NE 555 based (and similar) units produce a square wave output that is not true to life Morse as heard on air. Our high quality printed circuit board includes the oscillator and an
amplifier, on board power jack, on/off switch, speaker/headset jack and morse key screw terminals.Hook up to a 9 volt battery (or small up to 12 volt dc supply) to start the your code session. All enclosed in a custom laser cut case, volume knob (Knob color & style may vary) affixed with nylon hardware (see photos for more details). Amplifier allows the oscillator to be used to feed an 8 ohm speaker and use in classroom settings or by use of the volume control and earbuds practice quietly on your own. Fully assembled and tested.  Sale Includes: 1 x Electro-Resales "Trinity" Oscillator1 x Custom Laser cut case in Clear and Green (sometimes Clear and Red or Clear and Black or Clear and Blue)1 x Link to our web site for Instructions As always free shipping and 60 days money back guarantee Designed and made in the USA!