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Ten-Tec Single Paddle Electronic Keyer Model 670 Matches the Century 21 Transceiver #2

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MPN:
605
Condition:
Used
Shipping:
$10.00 (Fixed Shipping Cost)
  • Ten-Tec Single Paddle Electronic Keyer Model 670 Matches the Century 21 Transceiver #2
  • Ten-Tec Single Paddle Electronic Keyer Model 670 Matches the Century 21 Transceiver #2
$44.99
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Description

Ten-Tec Single Paddle Electronic Keyer Model 670 Matches the Century 21 Transceiver #2

This Keyer was tested and appears to be working.

 It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some cleaning of contacts and potentiometers.

I am selling this keyer as is, as described.

Description

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).

Specifications

  • 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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Ten-Tec Keyer Paddle Model KR-2

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Ten-Tec Keyer Paddle Model KR-2 This Keyer was tested and appears to be working.  It is a part of a large Ten-Tec collection which has been stored and unused for many years so it may need some...
Description The KR-20 provides crisp easy-to-copy CW at all speeds without operator fatigue. The paddle assembly incorporates a linear magnetic paddle return. Return force is adjusted by two front panel knobs which move magnetic shorting bars. Each paddle can be set individually to optimum tension. Paddles can be canted for the most comfortable position. Contact spacing is adjusted through holes in the top of the case. Specifications Keyed Time Base: Each character starts immediately when the paddle is actuated. A momentary closure of either paddle is all that is necessary to form a complete character. Weight Ratio: The traditional keyer has a dit-to-dah ratio of 1:3. A space has the same length as a dit. This dit-dah-space ration is fairly smooth at higher speeds, but becomes choppy at speeds below 25 wpm. Accordingly, we have incorporated a character-to-space ration extender to suit individual preference. The monitor, however, has the conventional 1:3 ratio. Monitor: A built-in monitor provides a side tone for feeding headphones or speaker. Volume and frequency of 600-1500 Hz is adjustable to suit the operator's taste. This also can be used for off-the-air code practice. For high impedance receiver input use a 220,000 ohm resistor in series with the monitor lead. Output: The output is handled by a reed relay. Rated at 15 volt-amps, it will key all regularly used keying circuits. The maximum keying voltage is 400 volts. Speed: A single control, tapered to provide linear adjustment, varies the speed from 6-60 words per minute. Electrical: The KR-20 circuitry is completely solide state. It emplys one dual JK integrated circuit, nine silicone transistors, and eight silicon diodes. power source is 105-125 volts at 0.125 amperes, 50-60 Hz. Push-on, push-off switch with pilot light. Line cord: 5'. Mechanical: The chasis is rigid steel. Cycolac® molded side panels have recessed wood grain finish. Nylon paddles are shaped for comfortable operation over long periods. Dimensions: 2-1/2" high x 4-3/4" wide x 8" deep. Weight: 2-1/2 pounds. Description The KR-20 provides crisp easy-to-copy CW at all speeds without operator fatigue. The paddle assembly incorporates a linear magnetic paddle return. Return force is adjusted by two front panel knobs which move magnetic shorting bars. Each paddle can be set individually to optimum tension. Paddles can be canted for the most comfortable position. Contact spacing is adjusted through holes in the top of the case. Specifications Keyed Time Base: Each character starts immediately when the paddle is actuated. A momentary closure of either paddle is all that is necessary to form a complete character. Weight Ratio: The traditional keyer has a dit-to-dah ratio of 1:3. A space has the same length as a dit. This dit-dah-space ration is fairly smooth at higher speeds, but becomes choppy at speeds below 25 wpm. Accordingly, we have incorporated a character-to-space ration extender to suit individual preference. The monitor, however, has the conventional 1:3 ratio. Monitor: A built-in monitor provides a side tone for feeding headphones or speaker. Volume and frequency of 600-1500 Hz is adjustable to suit the operator's taste. This also can be used for off-the-air code practice. For high impedance receiver input use a 220,000 ohm resistor in series with the monitor lead. Output: The output is handled by a reed relay. Rated at 15 volt-amps, it will key all regularly used keying circuits. The maximum keying voltage is 400 volts. Speed: A single control, tapered to provide linear adjustment, varies the speed from 6-60 words per minute. Electrical: The KR-20 circuitry is completely solide state. It emplys one dual JK integrated circuit, nine silicone transistors, and eight silicon diodes. power source is 105-125 volts at 0.125 amperes, 50-60 Hz. Push-on, push-off switch with pilot light. Line cord: 5'. Mechanical: The chasis is rigid steel. Cycolac® molded side panels have recessed wood grain finish. Nylon paddles are shaped for comfortable operation over long periods. Dimensions: 2-1/2" high x 4-3/4" wide x 8" deep. Weight: 2-1/2 pounds.
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Ten-Tec Keyer Paddle Model KR20

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Ten-Tec Keyer Paddle Model KR20 This Keyer was tested and appears to be working but the paddles appear to need some adjustment.  It is a part of a large Ten-Tec collection which has been stored...