K3ng Keyer Schematic ~repack~ (2024)

Many radios require the key line to be shorted to ground when keyed. The K3NG schematic typically includes a jumper to select between:

For high-voltage tube rigs, the schematic may include an optocoupler (e.g., 4N35) or a relay to provide absolute galvanic isolation. k3ng keyer schematic

Locate the 2N2222 transistor. Identify the Emitter (Arrow). Solder that to GND. Solder a 1k resistor from Pin 9 to the Base . Solder a wire from the Collector to your radio's "Tip" of the 3.5mm jack. Solder a separate GND wire to the "Sleeve" of the jack. Many radios require the key line to be

The basement shack smelled of rosin and stale coffee. Elias, a veteran amateur radio operator (callsign K1ABC), was staring at his latest project with the kind of frustration usually reserved for a broken amplifier tube. Identify the Emitter (Arrow)

Arduino Nano +5V -----[10k]-----+----[Paddle Dah]---- GND | +----[Paddle Dit]----- GND