Kenwood TM D710A Manual PDF

The Kenwood TM-D710A is a dual-band mobile transceiver featuring 144/430MHz bands, 50W output power, built-in TNC for APRS functionality, large LCD display, GPS compatibility, cross-band repeat capability, and extensive memory channels. Below are key sections for features, installation, operation, programming, and troubleshooting.

1. Features at a Glance 2. Installation 3. Basic Operation 4. Specifications 5. Controls and Functions 6. APRS Operation 7. Memory Programming 8. GPS Connection 9. Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Dual-band transceiver, Remote Control Head, DC Power Cable, Mounting Bracket, Microphone, GPS Interface Cable.

Feature	Description
Frequency Range	144-148MHz (VHF), 430-450MHz (UHF)
Output Power	50W VHF, 35W UHF (adjustable)
TNC Built-in	For APRS packet communication
GPS Ready	NMEA 0183 compatible GPS input
Cross-band Repeat	Full duplex cross-band repeating
Memory Channels	Up to 1000 memory channels
Display	Large dot matrix LCD with backlight
Power Supply	13.8V DC nominal
Antenna Connectors	Two SO-239 connectors
Data Port	For PC programming and data

Installation

Unpack and inspect all components. Choose suitable mounting location.

Mounting: Secure main unit and control head using provided brackets.
Power Connection: Connect red wire to positive (+), black wire to negative (-) of 13.8V DC source.
Antenna Connection: Connect VHF and UHF antennas to respective SO-239 connectors.
Microphone Connection: Plug microphone into MIC jack on control head.
GPS Connection: Connect compatible GPS receiver to GPS port.

WARNING! Ensure proper fuse rating (15A recommended). Verify correct polarity to avoid damage.

Basic Operation

Power on transceiver; familiarize with basic controls.

Frequency Selection: Use VFO mode to dial desired frequency.
Band Selection: Press BAND button to switch between VHF/UHF.
Volume/Squelch: Adjust VOLUME and SQL knobs for proper audio levels.
Transmit: Press PTT on microphone to transmit.
Memory Recall: Press MR button to access stored frequencies.

CAUTION! Ensure proper antenna connection before transmitting to prevent damage.

Specifications

Frequency Range: 144-148MHz (VHF), 430-450MHz (UHF)
Output Power: 50W VHF, 35W UHF (high power)
Power Supply: 13.8V DC ±15%
Current Consumption: 16A max (transmit), 1.3A (receive)
Modulation: 16K0F3E (FM)
Antenna Impedance: 50 ohms
Memory Channels: 1000 channels total
Operating Temp: -20°C to +60°C
Dimensions: Main unit: 140W × 40H × 180D mm

Controls and Functions

Front Panel: POWER, VOLUME, SQL, BAND, V/M, F, A/B, DUAL, LAMP, APRS buttons.

Microphone: PTT, UP/DOWN buttons, 16-key DTMF pad, Function button.

Menu Functions: APRS setup, beacon interval, path settings, memory management, display contrast, time-out timer, tone encode/decode, repeater offsets, cross-band settings, power save modes.

APRS Operation

Built-in TNC for Automatic Packet Reporting System functionality.

Enable APRS: Press APRS button to enter APRS mode.
Beacon Setup: Configure beacon interval, message, and path settings.
Position Reporting: Connect GPS for automatic position reporting.
Message Handling: Send and receive APRS messages.
Digipeating: Configure as digipeater if desired.

Tip: Set appropriate beacon interval to avoid channel congestion.

Memory Programming

Store frequently used frequencies and settings.

Select frequency in VFO mode.
Press F then M-IN to store memory.
Enter memory channel number (1-1000).
Set additional parameters: tone, offset, power level.
Press M-IN again to confirm.
Recall memories with MR button and channel selection.

Note: Memory channels can store frequency, tone, offset, and mode settings.

GPS Connection

Connect compatible GPS receiver for position reporting.

Use provided GPS interface cable.
Connect to GPS port on main unit.
Ensure GPS outputs NMEA 0183 data.
Configure APRS settings to use GPS data.
Verify position data appears on display.

WARNING! Use only compatible GPS receivers with proper voltage levels.

Maintenance

Keep unit clean and dry. Periodically check connections and antennas.

CAUTION! Disconnect power before cleaning. Use soft dry cloth only; avoid liquids.

Regulatory Information

FCC Part 15 and Part 97 compliant. 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 amateur radio use only - operator must possess valid amateur radio license. Copyright © Kenwood Corporation. For support, visit www.kenwood.com or contact authorized Kenwood dealer.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection/fuse	Check DC connections; verify fuse; ensure proper voltage.
No transmit	Settings/antenna	Check PTT function; verify antenna connection; check power setting.
Poor reception	Antenna/SQL setting	Adjust squelch; check antenna connection; verify antenna type.
APRS not working	GPS/TNC settings	Verify GPS connection; check APRS settings; confirm frequency.
Memory lost	Power interruption	Backup settings regularly; check internal battery if applicable.

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

Service: Contact authorized Kenwood service center for repairs.