Kenwood TS-120S Manual

The Kenwood TS-120S is a high-performance amateur radio transceiver covering the HF bands with SSB, CW, and AM modes. Featuring solid-state construction, digital frequency display, built-in power supply, VFO with clarifier, noise blanker, RF attenuator, and multiple filtering options. Below are key sections for operation, features, installation, specifications, controls, and troubleshooting.

Features at a Glance

Key components: Main transceiver unit, microphone connector, antenna terminals, power input, accessory ports.

Installation

Unpack and inspect contents. Place on stable surface with adequate ventilation.

1. Connect antenna: Use coaxial cable to SO-239 connector.
2. Connect microphone: Use 8-pin microphone connector.
3. Connect power: Use appropriate power cable for 120V AC operation.
4. Connect accessories: Use accessory ports for external devices.

WARNING! Ensure proper grounding and follow electrical safety procedures.

First-Time Setup

Power on transceiver; initialize settings.

1. Set operating frequency: Use main tuning dial to select band.
2. Select mode: Choose SSB, CW, or AM as needed.
3. Adjust power output: Set appropriate power level for operation.
4. Configure filters: Select IF filter bandwidth for current mode.

CAUTION! Ensure antenna is properly connected before transmitting.

Specifications

• Frequency Range: 1.8-30 MHz amateur bands
• Modes: LSB, USB, CW, AM
• Power Output: 200W PEP SSB, 200W CW, 50W AM
• Sensitivity: 0.25μV for 10dB S/N
• Selectivity: 2.4kHz/500Hz selectable
• Power Requirements: 120V AC, 50/60Hz
• Dimensions: Standard transceiver size
• Weight: Approximately 15 lbs

Controls and Settings

Front Panel: POWER, VOLUME, SQUELCH, RF GAIN, MODE, FILTER, NB, ATT, VFO A/B.

Main Controls: Tuning dial, mode selector, filter selection, noise blanker, RF attenuator, VFO selector.

Audio: Volume, squelch, RF gain, speaker output. Receiver: Noise blanker, RF attenuator, AGC settings. Transmitter: Power output, microphone gain, VOX controls. VFO System: Dual VFO operation, clarifier, RIT control.

Connecting Accessories

Antenna: SO-239 connector. Microphone: 8-pin DIN. Power: AC input. External: Accessory ports.

1. Turn off power before connecting accessories.
2. Match connectors to appropriate ports.
3. Secure all connections firmly.

Tip: Use high-quality coaxial cable for antenna connection.

Operating Modes

Supports SSB, CW, and AM operation.

1. SSB Operation: Select LSB/USB, adjust clarifier as needed.
2. CW Operation: Use CW filter, adjust sidetone volume.
3. AM Operation: Select AM mode for broadcast reception.
4. VFO Operation: Switch between VFO A and B for split operation.
5. Memory Channels: Store frequently used frequencies.
6. Scan Function: Automatic frequency scanning.

WARNING! Always check frequency and mode before transmitting.

Maintenance

Regular cleaning and inspection recommended.

CAUTION! Unplug power before cleaning. Use compressed air for dust removal.

Regulatory Information

FCC Part 97: Complies with amateur radio service rules. Manufactured by Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers.

Troubleshooting

Reset: Power cycle if experiencing issues.

Service: Contact authorized Kenwood service center for repairs.