Kenwood R-2000 Manual

The Kenwood R-2000 is a professional communications receiver featuring general coverage reception from 150kHz to 30MHz, AM/FM/SSB/CW modes, dual conversion superheterodyne system, quartz crystal filter, noise blanker, RF attenuator, AGC controls, built-in speaker, external antenna inputs, headphone jack, and comprehensive tuning capabilities. Below are key sections for operation, features, installation, specifications, controls, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Antennas 7. Operating Modes 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Main receiver unit, front panel controls, antenna inputs, speaker, headphone jack, external power connector.

Feature	Description
Frequency Coverage	150kHz to 30MHz continuous reception
Modes	AM, FM, SSB (LSB/USB), CW
Antenna Inputs	SO-239 connector for external antennas
Headphone Jack	For private monitoring
Power Input	External DC power connector
RF Attenuator	20dB attenuation switch
Noise Blanker	Pulse noise reduction circuit
AGC	Fast/Slow automatic gain control
Tuning	Main tuning knob with vernier control
Speaker	Built-in 3-inch dynamic speaker

Installation

Unpack and inspect contents. Place on stable surface away from interference sources.

Connect antenna: Use coaxial cable with PL-259 connector to SO-239 antenna input.
Connect power: Use approved external DC power supply (13.8V DC).
Connect headphones: Optional 3.5mm jack for private listening.
Connect external speaker: Use external speaker jack if required.

WARNING! Use proper grounding for antenna system. Ensure power supply voltage matches specifications.

First-Time Setup

Power on receiver; allow warm-up time for stable operation.

Select operating mode: Choose AM/FM/SSB/CW based on signal type.
Tune frequency: Use main tuning knob to desired frequency band.
Adjust volume: Set appropriate listening level.
Set RF gain: Adjust for optimal signal-to-noise ratio.
Configure AGC: Select Fast for SSB/CW, Slow for AM.

CAUTION! Avoid strong RF fields during initial setup. Use RF attenuator for strong local signals.

Specifications

Frequency Range: 150kHz - 30MHz continuous
Modes: AM, FM, SSB (LSB/USB), CW
Sensitivity: AM 1μV for 10dB S/N; SSB 0.5μV for 10dB S/N
Selectivity: 2.4kHz (AM), 2.7kHz (SSB), 15kHz (FM)
Audio Output: 2W at 10% distortion
Power Requirement: 13.8V DC, 1.5A
Dimensions: 420(W) x 140(H) x 320(D) mm
Weight: 7.5kg

Controls and Settings

Front Panel: POWER, VOLUME, RF GAIN, MODE selector, TUNING, AGC, NB, ATT, CLARIFIER.

Main Controls: POWER switch, VOLUME control, RF GAIN, MODE selector (AM/FM/SSB/CW), Main TUNING knob, AGC (Fast/Slow), Noise Blanker, RF Attenuator, Clarifier control.

Receiver Functions: BFO control for SSB/CW reception, Passband tuning, S-meter, Headphone output, External speaker jack, Antenna trimmer.

Connecting Antennas

Primary antenna: SO-239 connector for coaxial feedline. External longwire: Use appropriate antenna tuner.

Turn off receiver before antenna connections.
Use quality coaxial cable (RG-58/U or better).
Ensure proper antenna grounding for lightning protection.
Adjust antenna trimmer for maximum signal.

Tip: Position antenna away from power lines and noise sources for best reception.

Operating Modes

Supports AM broadcast, FM communications, SSB amateur radio, CW morse code.

AM Mode: For standard broadcast and aviation communications.
FM Mode: For commercial and marine VHF communications.
SSB Mode: Select LSB (Lower Sideband) or USB (Upper Sideband).
CW Mode: For morse code reception with BFO adjustment.
Use clarifier for fine frequency adjustment in SSB mode.
Adjust BFO for zero-beat in CW reception.
Use passband tuning to reduce interference.

WARNING! Proper mode selection essential for intelligible reception. Use correct sideband for frequency band.

Advanced Features

Noise Blanker: Reduces pulse-type interference. RF Attenuator: 20dB reduction for strong signals. AGC: Fast for SSB/CW, Slow for AM. Clarifier: Fine frequency adjustment ±1.5kHz.

Care & Maintenance

Keep unit clean and dry. Use soft cloth for exterior cleaning. Avoid liquid cleaners.

CAUTION! Do not operate in humid conditions. Allow proper ventilation around receiver.

Regulatory Information

FCC Part 15: Class B computing device compliance. Manufactured by Kenwood Corporation. For technical support and service, contact authorized Kenwood service centers. Specifications subject to change without notice.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No reception	Power/antenna	Check power supply; verify antenna connection; check fuse.
Poor sensitivity	Antenna/RF gain	Improve antenna system; adjust RF gain; check attenuator setting.
Distorted audio	Mode/AGC setting	Select correct mode; adjust AGC; reduce RF gain.
Frequency drift	Warm-up time	Allow 15-30 minutes warm-up for stable operation.
Noise interference	Local sources	Enable noise blanker; use RF attenuator; relocate antenna.

Service: Contact authorized Kenwood service center for internal repairs.