Kenwood TS-440S User Manual

The Kenwood TS-440S is a high-performance amateur radio transceiver covering HF and 6-meter bands with 100W output power, built-in antenna tuner, multiple operating modes including SSB, CW, AM, FM, and RTTY, digital frequency display, memory channels, noise blanker, and comprehensive filtering options. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Operating Modes 8. Memory Functions 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main transceiver unit, microphone connector, antenna ports, power input, accessory connectors, front panel controls.

Feature	Description
Frequency Coverage	1.8-30 MHz + 50-54 MHz (6m)
Output Power	100W PEP (SSB), 100W (CW), 40W (AM)
Built-in Antenna Tuner	Automatic and manual tuning capability
Operating Modes	LSB, USB, CW, AM, FM, FSK
Memory Channels	20 programmable memory channels
Noise Blanker	Effective pulse noise reduction
Filters	Selectable IF filters for each mode
VFO A/B	Dual VFO operation with split capability
RIT/XIT	Receiver/Transmitter incremental tuning
Power Requirements	13.8V DC, 20A maximum

Installation

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

Connect power supply: Use 13.8V DC power source with proper polarity.
Connect antenna: Use appropriate coaxial cable to ANT connector.
Connect microphone: Use 8-pin DIN connector for Kenwood microphones.
Connect accessories: Use accessory ports for external speakers, keyers, etc.

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

First-Time Setup

Power on transceiver; initialize settings.

Set operating frequency: Use main tuning dial or keypad entry.
Select operating mode: Choose LSB, USB, CW, AM, or FM as needed.
Adjust RF power: Set appropriate output power for band and mode.
Tune antenna: Use ATU button for automatic antenna tuning.
Set squelch: Adjust for background noise suppression.

CAUTION! Ensure proper license for amateur radio operation in your country.

Specifications

Frequency Range: 1.8-30 MHz + 50-54 MHz
Modes: LSB, USB, CW, AM, FM, FSK
Output Power: 100W PEP (SSB), 100W (CW), 40W (AM)
Power Supply: 13.8V DC ±15%, 20A max
Antenna Impedance: 50 ohms unbalanced
Microphone Connector: 8-pin DIN
Dimensions: 240(W) × 95(H) × 290(D) mm
Weight: Approximately 5.5 kg
Memory Channels: 20 (include frequency, mode, filter settings)

Controls and Settings

Front Panel: POWER, VOLUME, SQUELCH, RF POWER, MODE, FILTER, NB, ATU, VFO A/B, RIT, XIT.

Main Controls: Tuning dial, function keys, mode selection, filter selection, memory operations.

Frequency Control: Main tuning dial, keypad direct entry, VFO A/B switching. Mode Selection: LSB, USB, CW, AM, FM, FSK. Filter Settings: Selectable IF bandwidth for each mode. Audio: Volume, squelch, tone control. RF: Power output, preamp, attenuator. Memory: Store/recall 20 channels with complete settings.

Connecting Devices

Antenna: 50-ohm coaxial cable to ANT connector. Power: 13.8V DC with proper polarity. Microphone: 8-pin DIN connector.

Turn off power before connecting devices.
Use appropriate connectors and cables.
Ensure proper grounding for safety.
Connect external accessories to designated ports.

Tip: Use high-quality coaxial cables and proper connectors for best performance.

Operating Modes

Supports multiple amateur radio operating modes.

SSB Operation: Select LSB for 160m-40m, USB for 20m-6m.
CW Operation: Use CW mode with adjustable sidetone and keyer speed.
AM Operation: For AM broadcast and amateur AM operation.
FM Operation: For 10m and 6m FM operation.
RTTY/FSK: For digital modes with appropriate interface.
Split Operation: Use VFO A/B for cross-band or different transmit/receive frequencies.

WARNING! Always identify your station according to regulations. Observe band plans and operating procedures.

Memory Functions

20 memory channels store complete operating parameters.

Store Memory: Tune to desired frequency/mode, press F then MR to store.
Recall Memory: Press MR then channel number (0-19).
Memory Scan: Scan through programmed memory channels.
Memory Lock: Prevent accidental memory changes.

Care & Maintenance

Keep unit clean and dry. Use soft cloth for cleaning; avoid chemicals.

CAUTION! Disconnect power before cleaning. Avoid moisture and extreme temperatures.

Regulatory Information

FCC Part 97: Certified for amateur radio service. Must be operated by licensed amateur radio operators only. Copyright © Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection/fuse	Check power cable and connections; verify fuse integrity.
No transmit	Settings/microphone	Check PTT operation; verify microphone connection; check RF power setting.
Poor reception	Antenna/tuning	Verify antenna connection; use antenna tuner; check preamp setting.
Memory lost	Backup battery	Replace internal backup battery; reprogram memories.
Overheating	Ventilation/duty cycle	Ensure adequate ventilation; reduce transmit duty cycle.

Reset: Power off/on for soft reset. Factory reset procedures in service manual.

Service: Contact authorized Kenwood service centers for repairs.