Original Kenwood TM-D710 Manual

The Kenwood TM-D710 is a dual-band VHF/UHF mobile transceiver featuring APRS functionality, 144/430MHz operation, 50W VHF and 35W UHF output power, cross-band repeating capability, large LCD display, GPS compatibility, digital signal processing, multiple scanning functions, and comprehensive memory management. 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. APRS Operation 8. Memory Functions 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Dual-band transceiver unit, Control head with LCD display, Microphone, DC power cable, Mounting brackets, GPS interface cable.

Feature	Description
Frequency Range	VHF: 144-148MHz, UHF: 430-450MHz
Output Power	VHF: 5-50W, UHF: 5-35W (selectable)
APRS Function	Automatic Packet Reporting System with GPS
Cross-band Repeat	Simultaneous VHF/UHF repeating capability
Memory Channels	Up to 400 memory channels
Display	Large dot matrix LCD with backlight
GPS Interface	Built-in GPS data port for position reporting
DSP Functions	Digital Signal Processing for enhanced audio
Scanning Modes	Programmable, memory, band, and tone scan
Power Requirements	13.8V DC nominal (11-16V operating range)

Installation

Unpack and inspect contents. Select appropriate mounting location.

Mount transceiver unit: Secure in vehicle using mounting brackets, ensure proper ventilation.
Install control head: Mount in convenient location with clear visibility.
Connect power: Attach DC power cable to vehicle battery (red to positive, black to negative).
Connect antenna: Install dual-band antenna with proper connectors.
Connect control cable: Route cable between transceiver and control head.

WARNING! Ensure proper fuse rating (15A recommended). Do not operate without antenna connected.

First-Time Setup

Power on transceiver; initialize settings.

Set operating frequency: Use VFO mode to select desired frequency.
Configure squelch: Adjust squelch control for proper operation.
Set output power: Select appropriate power level for conditions.
Program memory channels: Store frequently used frequencies.
Configure APRS: Set up position reporting if GPS connected.
Adjust display: Set contrast and backlight for visibility.

CAUTION! Verify proper license for operating frequencies. Follow local regulations.

Specifications

Frequency Coverage: VHF: 144-148MHz, UHF: 430-450MHz
Output Power: VHF: 50W max, UHF: 35W max (adjustable)
Modulation: 16KΦF3E (FM)
Power Supply: 13.8V DC ±15% negative ground
Current Consumption: Receive: 0.8A, Transmit: 12A max
Antenna Impedance: 50 ohms
Operating Temperature: -20°C to +60°C
Dimensions: Main unit: 140W × 40H × 180D mm
Weight: Approx. 1.2 kg

Controls and Settings

Front Panel: POWER/VOLUME, SQL, HM/RV, A/B, V/M, F/W, DUAL, LAMP, CALL, TONE, LOW, A>B, B>A.

Microphone: UP/DOWN, A/B, PF keys, PTT, numeric keypad.

Menu Settings: Display contrast, backlight, beep volume, time-out timer, APRS settings, memory functions, scan settings, tone encode/decode, power save mode, GPS configuration, cross-band repeat settings.

Connecting Devices

Antenna: SO-239 connectors for VHF/UHF. External Speaker: 3.5mm jack. GPS: Dedicated GPS port. Data: Mini-DIN connector for packet operation.

Turn off power before connecting accessories.
Use proper cables and connectors for each interface.
Ensure secure connections to prevent signal loss.
Route cables away from heat sources and moving parts.

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

APRS Operation

Automatic Packet Reporting System with position tracking.

Connect GPS: Interface compatible GPS receiver.
Enable APRS: Access APRS menu to configure settings.
Set beacon rate: Configure position reporting interval.
Input station data: Enter call sign and other identification.
Monitor APRS traffic: View received position reports on display.
Send messages: Use message function for text communication.
Configure digipeating: Set up as digipeater if desired.

WARNING! Ensure proper configuration to avoid unnecessary channel congestion.

Memory Functions

Memory channel management and scanning operations.

Store memory: Save frequency, tone, and other settings to memory channel.
Recall memory: Quickly access stored frequencies.
Memory scan: Scan programmed memory channels.
Programmable scan: Set up custom scan ranges.
Priority watch: Monitor priority channel while scanning.
Memory grouping: Organize channels into groups for easier management.

Care & Maintenance

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

Regular maintenance: Check connections, inspect cables, verify proper operation.

CAUTION! Do not use solvents or abrasive cleaners. Keep ventilation openings clear.

Regulatory Information

FCC Part 15: Class B digital device. FCC Part 97: Amateur Radio Service compliance. This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. For technical support, contact Kenwood authorized service centers or visit www.kenwood.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection/fuse	Check power cable connections; verify fuse integrity.
No transmission	PTT/microphone	Check microphone connection; verify PTT operation.
Poor reception	Antenna/connections	Inspect antenna and coaxial connections; check SWR.
APRS not working	GPS/settings	Verify GPS connection; check APRS configuration.
Overheating	Ventilation/power	Ensure adequate ventilation; check power settings.
Display issues	Connections/settings	Check control cable; adjust display contrast.

Reset: Menu > System Reset to restore factory defaults if needed.

Service: Contact authorized Kenwood service center for repairs.