Single Paddle Electronic Keyer Model 670


Designed specifically for use with the Ten-Tec Century/21 Transceiver. Features self-completing dits and dahs, preset weighting for optimum articulation in the most used speed range, speed control with a range between 6 and 50 words per minute, and an enclosure that matches the transceiver. Powered by the Century/21 power supply, no separate on-off switch is needed for the keyer. Incorporates low voltage positive transistor switching to interface with the Century/21 keying circuit (it will not key transmitters with cathode or grid-block keying).


  • Keyer Output Circuit: Positive low voltage transistor switch.
  • Speed Range: 6 to 50 WPM.
  • Time Base: Keyer starts with paddle actuation.
  • Character Generation: Self-completing dits and dahs.
  • Weighting: Dit length increased approximately 10% at 20 WPM.
  • Power Required: 10 - 14 VDC taken from transceiver supply.
  • Paddle: Single type. Molded plastic, with adjustable contact spacing.
  • Semiconductors: 1 Integrated Circuit; 5 Transistors; 9 Diodes.
  • Finish: Gray front panel, black pebble vinyl top and sides.
  • Size: HWD 2" x 4" x 6"
  • Weight: 1 lb, 8 oz.

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QR Code 670 (generated for current page)