Kenpro KP-100 Squeeze Key Instruction Manual

Features

• The KP-100 squeeze key utilizes CMOS ICs and silicon transistors in its circuitry.
• Keying operation is supported via either a transistor switch or a relay switch.
• Features a built-in monitor speaker with adjustable monitor sound volume.
• The KP-100 squeeze key can operate on AC 117/220 V or DC 13.8 V.
• Dot and dash codes are transmitted as complete codes without requiring keying speed control.

Pre-Operation

Before commencing AC operation, ensure the selector switch located on the bottom side of the KP-100 is set according to your local AC line voltage.

For transistor keying operation, do not exceed a keying voltage of DC 150 V or current of 1 A. For operation at voltages exceeding DC 150 V or currents exceeding 1 A, relay keying operation is recommended. Relay keying offers a maximum output voltage of 500 V at open circuit and a maximum key-down current of 500 mA.

Please note that the keying transistor 2SC2233 is not covered under warranty, even if the KP-100 itself is within its warranty period.

Product Overview and Operation

Front Panel

The front panel features the following controls and indicators:

1. Speed Control / Tuning Knob: Turning this knob to the TUNE position places the transceiver in transmit mode, which can be used for transmitter tuning.
2. Dot Paddle: For transmitting dots.
3. Dash Paddle: For transmitting dashes.
4. Pilot Lamp: Indicates operation status.
5. Power Switch / Volume Control for Monitor: Controls the power and the volume of the monitor speaker.

Rear Panel and Bottom Side

The rear panel and bottom side include various connection points and switches:

1. DC Jack: For connecting a DC 13.8 V power source (20 mA to 60 mA).
2. RELAY / TR. SWITCH: Allows switching between Transistor Keying and Relay Keying modes, depending on the transmitter's key terminals.
3. KEYED LINE: Connects to the transmitter's key terminals. Ensure correct polarity (+/-) for transistor keying. If disconnected, the KP-100 remains in TX mode.
4. Phone Jack: For connecting an external speaker or earphone.
5. AC Line Fuse Holder: Requires a 0.5 A fuse.
6. AC Selector Switch: Used to select the appropriate input AC voltage for your region.

Operation Details

1. SEMI / AUTO Switch: In AUTO position, both dot and dash operate automatically. In SEMI position, the dot operates automatically, but the dash requires manual operation (like a bug key).
2. ACS (Auto Character Space) Switch: When set to [ON], the character space is fixed at exactly 3 dots. When set to [OFF], the character space is not fixed at 3 dots. If operating at a high speed with the switch in the [ON] position, there might be instances where a letter 'A' appears as 'E' or 'T' due to delayed dash timing. It is recommended to select the [ON] or [OFF] position based on your desired operation speed.
3. TONE Volume: Adjusts the tone pitch from [L] (low) to [H] (high).
4. WEIGHT Volume: Adjusts the dot-to-dash ratio. At [MIN], the ratio is 1:3. At [MAX], the ratio varies as illustrated in FIG-3.

Adjusting

To adjust the manipulator, follow these recommended procedures:

1. Remove the top cover. Ensure the AC cord is disconnected from the outlet before removing the cover.
2. To adjust the contact point of the lever, loosen the locking screw of the contact point. Adjust the space of the contact point for easier keying, then re-lock the screw. This procedure should be repeated for the other lever.
3. To adjust the spring tension of the lever, loosen the locking nut and adjust the tension using the spring tension screw, then re-lock the nut.

Refer to Fig. 4 for a diagram of the adjustment mechanism.

Specifications

Diagram Descriptions

FIG-3: WEIGHT VOLUME

This diagram illustrates the effect of the WEIGHT VOLUME knob on the dot and dash timing. At MIN WEIGHT VOLUME, the ratio of dot to dash is shown as 1:3. At MAX WEIGHT VOLUME, the ratio is variable, depicted as a longer dash duration relative to the dot.

FIG-4: Paddle Adjustment Mechanism

This diagram shows the mechanical components used for adjusting the Morse code paddles. Key parts include a locking screw, a contact screw, a locking nut, and a spring tension screw. These components allow for fine-tuning of the contact point spacing and spring tension for both the dot and dash paddles, ensuring optimal keying feel and performance.