Kenwood TS 440 Manual

The Kenwood TS 440 is a high-performance amateur radio transceiver featuring 100W output power, full coverage of amateur bands from 1.8 to 30 MHz, built-in antenna tuner, DSP filtering, multiple operating modes including SSB, CW, AM, FM, and RTTY, dual VFOs, memory channels, and comprehensive scanning functions. Below are key sections for operation, features, installation, setup, specifications, and 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 all amateur bands
Output Power	100W PEP (SSB), 100W (CW)
Modes	USB, LSB, CW, AM, FM, FSK
Antenna Tuner	Built-in automatic tuner
VFOs	Dual VFOs (A/B)
Memory Channels	99 memory channels
DSP	Digital Signal Processing
Scan Functions	Programmable scan, memory scan
Power Requirements	13.8V DC, 20A
Dimensions	290W × 115H × 350D mm

Installation

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

1. Connect power supply: Use 13.8V DC power source with proper polarity.
2. Connect antenna: Use coaxial cable to ANT connector.
3. Connect microphone: Plug into MIC connector on front panel.
4. Connect accessories: Use ACC connector for external devices.
5. Grounding: Connect ground terminal to proper earth ground.

WARNING! Ensure proper ventilation; do not block cooling vents. Use correct power supply to avoid damage.

First-Time Setup

Power on transceiver; initialize settings.

1. Set operating frequency: Use main dial to select desired band.
2. Select mode: Press MODE button to choose SSB, CW, AM, or FM.
3. Adjust power output: Use POWER control to set desired output level.
4. Configure antenna tuner: Press TUNE to activate automatic tuning.
5. Set squelch: Adjust SQL control for noise suppression.
6. Program memories: Store frequently used frequencies in memory channels.

CAUTION! Always use proper antenna matching. Avoid transmitting without antenna connected.

Specifications

• Frequency Range: 1.8-30 MHz (amateur bands)
• Output Power: 100W PEP (SSB), 100W (CW)
• Modes: LSB, USB, CW, AM, FM, FSK
• Sensitivity: 0.25μV for 10dB S/N (SSB)
• Selectivity: 2.4kHz (SSB), 500Hz (CW)
• Antenna Impedance: 50 ohms unbalanced
• Power Supply: 13.8V DC ±15%, 20A max
• Current Drain: 20A max transmit, 1.5A receive
• Weight: 7.5 kg
• Temperature Range: -10°C to +50°C

Controls and Settings

Front Panel: POWER switch, main tuning dial, mode selection, AF/RF gain, squelch, VFO A/B, memory buttons.

Key Functions: VFO/MR (VFO/Memory selection), A/B (VFO selection), LOCK (dial lock), FAST/SLOW (tuning rate), NB (noise blanker), ATT (attenuator), PREAMP (preamplifier).

Menu Settings: DSP filter settings, scan parameters, memory management, display contrast, keyer speed, CW sidetone, RIT/XIT offsets, repeater shifts.

Connecting Accessories

External speaker: Use SP connector. Computer interface: Use ACC connector for CAT control. CW key: Use KEY connector. External tuner: Use ANT2 connector.

1. Ensure transceiver is powered off before connecting accessories.
2. Match connector types and pin configurations.
3. Configure interface settings in menu if required.

Tip: Use shielded cables for audio connections to reduce noise.

Operating Modes

SSB Operation: Select USB or LSB mode. Adjust RF power and microphone gain. Use clarifier for fine tuning.

CW Operation: Select CW mode. Connect straight key or keyer. Adjust keyer speed and sidetone volume. Use CW filter for narrow bandwidth.

Digital Modes: Use FSK for RTTY operation. Connect computer interface for packet, PSK31, etc.

FM Operation: Select FM mode. Set repeater offsets if needed. Use CTCSS tones for repeater access.

Memory Functions

Store frequencies, modes, and settings in 99 memory channels.

1. Store memory: Tune to desired frequency, press VFO/MR, then M.IN.
2. Recall memory: Press MR, then select memory channel number.
3. Memory scan: Press SCAN to scan through programmed memories.
4. Memory clear: Press M.IN while holding FUNC for 2 seconds.

Memory channels store: Frequency, mode, filter settings, RIT/XIT, repeater shift, CTCSS tone.

Maintenance & Care

Keep unit clean and dry. Use soft cloth for cleaning. Avoid chemical cleaners. Check connections periodically.

CAUTION! Disconnect power before cleaning. Do not use liquids near electrical components.

Regulatory Information

FCC Part 97: Certified for amateur radio service. CE compliant for European markets. Copyright © Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers or visit www.kenwood.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection	Check power cable and fuse; verify 13.8V supply
No transmit	Settings/antenna	Check PTT operation; verify antenna connection
Poor reception	Antenna/tuning	Check antenna system; use preamp if needed
Memory lost	Backup battery	Replace internal backup battery
Overheating	Ventilation	Ensure adequate airflow; reduce power if necessary

Reset: Hold FUNC while powering on to reset to factory defaults.

Service: Contact authorized Kenwood service center for repairs.