Kenwood TS 120 Manual

The Kenwood TS-120 is a classic amateur radio transceiver featuring 160-10 meter coverage, SSB/CW/AM modes, built-in VOX, RF attenuator, noise blanker, RIT control, and 200W PEP output. This manual covers operation, specifications, installation, controls, and maintenance for this renowned HF transceiver. Below are key sections for features, installation, operation, specifications, 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 power supply: Use 13.8V DC power source with sufficient current capacity.
2. Connect antenna: Use coaxial cable to SO-239 connector.
3. Connect microphone: Use compatible 8-pin microphone connector.
4. Connect accessories: External speaker, keyer, or other accessories as needed.

WARNING! Ensure proper grounding and use appropriate fuses. Do not operate without proper antenna connected.

First-Time Setup

Power on transceiver; allow warm-up time.

1. Set operating frequency: Use main tuning dial to select desired band and frequency.
2. Adjust receiver: Set RF gain, AF gain for comfortable listening level.
3. Configure mode: Select SSB, CW, or AM as needed.
4. Set power output: Adjust drive level for desired output power.
5. Enable features: Configure VOX, noise blanker, RIT as required.

CAUTION! Ensure proper license for amateur radio operation. Follow local regulations.

Specifications

• Frequency Range: 1.8-30 MHz (amateur bands)
• Modes: USB, LSB, CW, AM
• Power Output: 200W PEP SSB, 80W CW, 40W AM
• Receiver Sensitivity: 0.25μV for 10dB S+N/N
• Selectivity: SSB: 2.4kHz, CW: 500Hz, AM: 6kHz
• Power Supply: 13.8V DC ±15%, 22A max
• Dimensions: 140W x 360D x 340H mm
• Weight: 12 kg
• Microphone: 8-pin dynamic type

Controls and Settings

Front Panel: POWER, RF GAIN, AF GAIN, MODE, RIT, NB, VOX, AGC, DRIVE, TUNING.

Main Controls: Tuning dial, mode selector, function switches, meter.

Receiver: RF gain, AF gain, AGC (fast/slow), noise blanker, RIT control. Transmitter: Drive control, VOX sensitivity/delay, CW sidetone/keyer speed. General: Power switch, meter function (S/RF/SWR/PWR), preamp/attenuator.

Connecting Accessories

Microphone: 8-pin connector. Antenna: SO-239. Power: DC input. Accessory: External speaker, keyer, tuner.

1. Turn off power before connecting accessories.
2. Use proper cables and connectors for each accessory.
3. Ensure secure connections to prevent damage.
4. Follow accessory manufacturer instructions.

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

Operating Modes

Supports SSB, CW, and AM operation.

1. SSB Operation: Select USB/LSB, adjust drive, use VOX or PTT.
2. CW Operation: Select CW mode, connect key, adjust sidetone and speed.
3. AM Operation: Select AM mode, adjust modulation and power.
4. Receiver Operation: Use RF/AF gain, AGC, noise blanker for optimal reception.
5. Tuning: Use tuning dial for frequency selection, RIT for receive offset.

WARNING! Always check frequency and mode before transmitting. Avoid interference to other services.

Maintenance

Regular cleaning and inspection recommended. Keep unit dry and well-ventilated.

CAUTION! Disconnect power before cleaning. Use only dry cloth; no liquids or solvents.

Regulatory Information

FCC Part 97: Certified for amateur radio service. Operation requires appropriate amateur radio license. Copyright © Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers.

Troubleshooting

Service: Contact authorized Kenwood service center for technical issues.