SPECIFICATIONS
KEYING
Speed Variable from less than 10 to over 60 words per minute. (alternate
connection for less than 10 to over 35 words per minute.)
Keyer Output Positive line to ground:
Max. voltage, open circuit or spikes – 300 V, max. current – 200 mA.
Negative line to ground:
Max. voltage, open circuit or spikes – 200 V, max. current – 10 mA.
GENERAL
Audio Internal speaker or high impedance (at least 500 Ω) headphone jack.
Sidetone Frequency internally adjustable from approximately 500 to 1000 Hz.
Controls
Front panel Speed/Pull to Hold; On-Off/Volume.
Internal Sidetone frequency; Paddle tension; Paddle travel.
Rear Panel Connections Power cord; Keyer output; Headphones; External 12 Volt; Receiver
audio; External key.
Solid-State Complement
Diodes 5 × 1N4002 silicon
3 × GD510 germanium
2 × 1N2071 silicon
1 × 1N709A zener
Transistors 1 × X29A829 PNP
3 × MPS-A20 PNP
1 × MPS-D51 PNP
2 × MPS-A42 NPN
1 × D40C1 Darlington
Integrated circuits 2 × 7400 Quad 2-input, positive NAND gate
1 × 7402 Quad 2-input, positive NOR gate
1 × 7410 Triple 3-input, positive NAND gate
1 × 7473 Dual J-K Master-Slave Flip Flop
Temperature Range 0 °C to 40 °C (Typical: –10 °C to 40 °C)
Power Requirements
AC operation 120 V ±10 % or 240 V ±10 %. AC, 50/60 Hz, 3.5 W
Battery operation 10 to 14.5 VDC, negative ground, 150 mA
Dimensions (overall) 5" wide × 3" high × 7.4" deep (12.7 cm × 7.62 cm × 18.8 cm)
Net Weight 2.75 lbs (1.25 kg)
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