Kenwood TR 2500 Manual

The Kenwood TR 2500 is a professional-grade 2-meter amateur radio transceiver featuring 25 watts of output power, 50 memory channels, wide frequency coverage (140-150 MHz or 144-148 MHz), CTCSS/DCS encode/decode, cross-band repeat function, rugged metal construction, and advanced scanning capabilities. Below are key sections for operation, programming, features, and troubleshooting.

Features at a Glance

Key components: Main unit with LCD display, microphone connector, DC power input, antenna port, external speaker jack, and data port.

Installation

Unpack and inspect contents. Choose suitable mounting location.

1. Connect antenna: Use appropriate coaxial cable to SO-239 connector.
2. Connect power: Use 13.8V DC power supply with correct polarity.
3. Connect microphone: Plug compatible Kenwood microphone into 8-pin connector.
4. Mount securely: Use appropriate mounting bracket for vehicle or base station.

WARNING! Ensure proper fuse rating (typically 15A). Verify correct polarity before applying power.

First-Time Setup

Power on radio; initialize settings as needed.

1. Set operating frequency: Use main dial or keypad to enter desired frequency.
2. Configure offset and tone: Set repeater offset and CTCSS/DCS tones as needed.
3. Program memory channels: Store frequently used frequencies and settings.
4. Adjust squelch: Set squelch level to eliminate background noise.

CAUTION! Ensure proper antenna is connected before transmitting.

Specifications

• Frequency Range: 140-150 MHz or 144-148 MHz
• Output Power: 25W (High), 10W (Medium), 5W (Low)
• Memory Channels: 50 channels
• Modulation: 16K0F3E (FM)
• Power Requirement: 13.8V DC ±15%
• Current Drain: Receive: 0.5A (max), Transmit: 7A (max)
• Antenna Impedance: 50 ohms
• Dimensions: Approximately 140W × 40H × 180D mm
• Weight: Approximately 1.2 kg

Controls and Settings

Front Panel: POWER/VOLUME knob, SQL knob, main tuning dial, function keys, microphone connector.

Key Functions: F key for secondary functions, MHz for frequency entry, V/M for VFO/Memory selection, CALL for call channel, LOW for power selection.

Menu Settings: CTCSS/DCS encode/decode, repeater offset, scan functions, display settings, time-out timer, lock functions.

Connecting Accessories

External Speaker: Use external speaker jack for improved audio. Data Port: For programming or data applications. DC Power: 13.8V DC input with fuse protection.

1. Turn off radio before connecting accessories.
2. Use Kenwood-compatible accessories for optimal performance.
3. Ensure proper cable routing to avoid interference.

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

Memory Programming

Store frequencies and settings for quick access.

1. Select VFO mode and set desired frequency.
2. Press F then M.IN to enter memory programming.
3. Select memory channel number (00-49).
4. Store frequency, offset, tone, and other settings.
5. Press M.IN again to confirm storage.
6. Recall memory channels using V/M key and channel selector.

NOTE: Memory channels retain settings when power is removed.

Advanced Functions

Scanning: Programmable band scan and memory scan with priority channel. Cross-band Repeat: Function to retransmit received signals on different band. CTCSS/DCS: Sub-audible tone encode and decode for repeater access. Time-out Timer: Automatic transmission timer (TOT).

Maintenance & Care

Keep radio clean and dry. Use soft cloth for cleaning; avoid solvents. Check connections periodically for corrosion or damage.

CAUTION! Do not expose to extreme temperatures or moisture. Service by qualified technicians only.

Regulatory Information

FCC Part 97: Certified for amateur radio service. This device must accept any interference received. For amateur use only. Proper amateur radio license required for operation. Copyright © Kenwood Corporation. For support, contact authorized Kenwood service centers.

Troubleshooting

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

Service: Contact authorized Kenwood service center for repairs.