MCT-73 Morse Code Trainer
MCT-73 front view
MCT-73 angle view

Welcome to SparkGap Labs!

Learn to send and receive Morse code anywhere with the MCT-73 Morse code trainer! Using the time-tested Koch/Farnsworth methods, the MCT-73 will efficiently walk you through the process of learning Morse code.

Because the MCT-73 uses a dedicated microcontroller, you'll be able to learn in a virtually lag-free environment unlike most web, computer, and smartphone training apps. With its onboard speaker and included earphones, you'll be able to easily practice anywhere. An integrated red LED lamp gives visual feedback as you send and receive code as well.

All training modes have 40 levels. Level 1 starts with two characters and each level adds in a new character. New characters are introduced in the time-tested Koch Method order. Speed is determined by a raw WPM setting and an additional inter-character (Farnsworth) delay, giving you full control over your learning pace.

A great walkthrough of the assembly process can be seen here.

In addition to the MCT-73 kit, we also offer hand-built, completely assembled units.

Learn More:

Features

Training & Practice Modes
  • RX Training
    Practice copying and receiving Morse code.
  • TX Training
    Practice keying letters with automatic scoring.
  • Echo Back
    Copy Morse code and key it back — also with automatic scoring.
  • Free Play
    Free-form practice mode for sending Morse code outside of structured training.
Customizable Settings
  • Volume & Pitch
  • WPM & Farnsworth Delay
  • Key Mode (Iambic A/B or Straight Key)
  • Paddle Setup
  • Power-Save Settings

Kit Details

This is an intermediate level kit and requires basic soldering skills.

A key is not included.

Included in the Kit
FP: Faceplate PCB: Circuit Board ENC: Diecast Aluminum Enclosure PHONES: Stereo Earphones DS1: Blue 16x2 LCD Display LS1: PC Board Mount Speaker U2-SCKT: 28 Pin DIP IC Socket U3-SCKT, U4-SCKT: 8 Pin DIP IC Sockets J4: 2x3 ISP Header BT1: Battery Connector U2: ATmega168A Microcontroller U3: MCP4901 8-Bit Single Output DAC U4: LM386/JRC386 Audio Amplifier U1: 78L05 +5V Regulator SW4: Latching DPDT Switch SW1: Momentary DPDT Switch SW2, SW3: Momentary DPDT Switches J2, J3: 3.5mm Vertical Stereo Jacks RV1: 5kΩ 0.1W Trimpot C4, C6: 0.1µF Capacitors C7: 56nF Capacitor C1, C3: 0.47µF Capacitors C2: 0.33µF Capacitor C5: 10µF Capacitor C8: 220µF 25VDC Capacitor D1: 1N5817 1A 20V Schottky Diode D2, D2-SPCR: 5mm Red LED w/ Spacer DS1-HDR: 16 Pin LCD Header SPACER: M3x5mm ABS Spacers NUT: M3 Hex Nuts SCREW: M3x20mm Pan Head Machine Screws BT1-CLIP: 9V Battery Clip FT: Adhesive Feet TSCREW: Knurled Thumb Screws BTACK: Reusable Adhesive R1: 470Ω ¼W 1% Resistor R2, R5: 10kΩ ¼W 1% Resistors R3, R4, R8: 1kΩ ¼W 1% Resistors R6: 1.2kΩ ¼W 1% Resistor R7: 10Ω ¼W 1% Resistor
Required Tools and Supplies (not included)
Fine-gauge Wire Stripper Wire Cutter #1 Phillips Screwdriver Soldering Iron Solder 9 Volt Battery Key/Paddle

Videos