Kenwood TW 4000A Manual

The Kenwood TW 4000A is a professional-grade two-way radio system designed for commercial and industrial use. This robust communication device features UHF/VHF frequency bands, multiple channel capacity, advanced scanning functions, weather alert capabilities, programmable buttons, and durable construction for harsh environments. 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 Accessories 7. Programming and Operation 8. Advanced Features 9. Maintenance & Care 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Durable chassis, LCD display, programmable buttons, antenna connector, speaker/microphone, charging port, accessory connector.

Feature	Description
Frequency Range	UHF 400-470MHz / VHF 136-174MHz
Channels	Up to 128 programmable channels
LCD Display	Backlit display with channel and status information
Programmable Buttons	6 programmable function buttons
Scanning	Priority scan, programmable scan lists
Weather Alert	NOAA weather channels with alert function
Battery	High-capacity Li-ion battery pack
Power Output	Up to 5W (UHF) / 5W (VHF)
Durability	IP54 dust and water resistant
Accessories	Speaker mic, charging cradle, belt clip included

Installation

Unpack and inspect contents. Verify all components are present.

Battery installation: Align battery with contacts, slide until it clicks into place.
Antenna attachment: Screw antenna clockwise onto antenna connector until snug.
Belt clip: Attach to back of radio for portable use.
Charging: Place radio in charging cradle, ensure charging indicator lights.

WARNING! Use only Kenwood-approved accessories. Do not use damaged batteries or chargers.

First-Time Setup

Power on radio; initialize settings.

Battery charging: Charge battery fully before first use (approx. 8 hours).
Basic programming: Use programming software to set frequencies and channels.
Volume adjustment: Rotate volume knob to desired listening level.
Squelch setting: Adjust squelch control to eliminate background noise.
Channel selection: Use channel selector knob to choose programmed channels.

CAUTION! Radio must be programmed by authorized personnel only.

Specifications

Frequency Range: UHF 400-470MHz / VHF 136-174MHz
Channels: 128 programmable channels
Power Output: 5W (UHF/VHF), 1W low power setting
Battery: 2000mAh Li-ion battery pack
Operating Time: Up to 12 hours typical use
Dimensions: 130mm x 58mm x 37mm (H x W x D)
Weight: 350g with battery and antenna
Temperature Range: -30°C to +60°C operating
Water Resistance: IP54 rated
Programming: KPG-46D programming software required

Controls and Settings

Front Panel: Power/Volume knob, Channel selector, PTT button, Programmable buttons, LCD display.

Programmable Buttons: MONI (monitor), SCAN, LAMP (backlight), SQL (squelch), A/B (dual watch), WX (weather).

LCD Display: Channel number, battery level, transmit indicator, scan status, dual watch indicator. Settings: Power levels (high/low), time-out timer, busy channel lockout, battery save mode, scan resume methods.

Connecting Accessories

Accessory port: For external speaker microphones, headsets, programming cables.

External speaker mic: Plug into accessory port until it clicks.
Programming cable: Connect to PC for channel programming.
Headset: Use Kenwood-approved headsets for private listening.
Charging cradle: Ensure clean contacts for proper charging.

Tip: Always turn off radio before connecting/disconnecting accessories.

Programming and Operation

Requires KPG-46D programming software and programming cable.

Connect programming cable to radio and PC.
Launch KPG-46D software and read current configuration.
Program frequencies, CTCSS/DCS codes, and channel names.
Set scan lists and priority channels.
Configure programmable button functions.
Write configuration to radio.
Verify programming by testing all channels and functions.

WARNING! Only qualified personnel should program radios. Incorrect programming may violate FCC regulations.

Advanced Features

Scanning: Programmable scan lists with priority channel. Dual Watch: Monitor two channels simultaneously. Time-Out Timer: Prevents extended transmissions. Busy Channel Lockout: Prevents transmitting on busy channels. Battery Save: Extends battery life during standby. Weather Alert: Automatic NOAA weather alerts.

Maintenance & Care

Clean exterior with soft, dry cloth. Avoid chemicals and solvents. Check antenna and battery contacts regularly. Store in cool, dry place when not in use.

CAUTION! Do not immerse in water. Avoid extreme temperatures. Use only approved chargers.

Regulatory Information

FCC Part 90 certified for land mobile radio service. This device complies with Part 15 of FCC rules. Operation subject to condition that device does not cause harmful interference. Copyright © Kenwood Corporation. For technical support, contact Kenwood authorized service centers or visit www.kenwood.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Battery discharged or faulty	Charge battery; check battery contacts; replace if necessary.
Poor reception	Antenna loose or damaged	Tighten antenna; inspect for damage; replace if needed.
Cannot transmit	Channel busy or programming issue	Check busy channel lockout; verify channel programming.
No audio	Volume setting or speaker issue	Adjust volume; check external speaker connections.
Battery drains quickly	Battery age or settings	Enable battery save mode; replace old battery.
Programming failure	Cable or software issue	Check cable connections; verify software compatibility.

Reset: Use programming software to reset to factory defaults if needed.

Service: Contact authorized Kenwood service center for repairs.