Amateur Radio Products



CW Keyboard Keyer with LCD display, and keyboard

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Download the MFJ-452 Manual

MFJ Super CW Keyboard lets you send effortless CW as soon as you turn it on -- no computer to boot, no program to load -- just start typing.

You get a standalone MFJ CW Keyboard that includes an RFI suppressed keyboard, a two line 16 character LCD display, eight 250 character nonvolatile message memories, a 150 character type - ahead buffer, iambic keyer, plus a powerful Morse Code trainer, much more!

Variable speed from 5 to 100 WPM, adjustable weight from 5 to 95%, sidetone from 300 to 3000 Hz and serial number from 0 to 9999. Has buffer and memory full audible indicators. Keys solid state and the tube rigs. AT101 compatible keyboard plugs into compact 3.5x2.5x3.5 inch interface. Use 12VDC or 110 VAC with MFJ-1312D.


  • Includes eight independent 250-character message memories
  • 150-character type-ahead buffer available with audible "buffer full" warning.
  • Paddle jack makes MFJ-452 a keyboard-controlled iambic keyer. Iambic paddle, space bar, or singlelever usable as straight keys
  • Embedded commands include auto-incrementing serial numbers, timed pauses up to 99 minutes 99 seconds, and message loops
  • Adjustable parameters vary code speed from 5 to 100 WPM and code weight from 5 to 95%
  • Internal sidetone speaker with adjustable volume and frequency
  • Output tune mode has constant key to adjust tuners or antennas
  • LCD readout displays buffer contents and transmitted text
  • Practice operation using key-output disable and Farnsworth mode for random code generator

Add to Cart:

  • Model: MFJ-452
  • Shipping Weight: 0.9lbs
  • Manufactured by: MFJ

This product was added to our catalog on Wednesday 10 October, 2007.

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