Kenwood R-2000 Communications Receiver Service Manual

Introduction

This document provides comprehensive technical information for the Kenwood R-2000 Communications Receiver. It includes detailed specifications, circuit descriptions, component lists, and adjustment procedures necessary for servicing and maintaining the unit. The R-2000 is a versatile receiver designed for various communication needs.

Key Features

• Wide frequency range coverage.
• Multiple reception modes including AM, FM, SSB (USB/LSB), and CW.
• Advanced PLL (Phase Locked Loop) circuit for stable frequency control.
• Digital VFO with various tuning steps and memory functions.
• Timer and clock functions for scheduled operation.
• Noise blanker for improved reception in noisy environments.

Specifications Overview

The receiver operates across a frequency range of 150 kHz to 30 MHz, supporting AM, FM, SSB, and CW modes. Detailed sensitivity, selectivity, and frequency stability specifications are provided within the manual.

Circuitry and Operation

The manual delves into the intricacies of the RX unit and PLL unit, explaining the function of various components and circuits, including local oscillators, mixers, filters, and control logic. Understanding these sections is crucial for effective troubleshooting and repair.

Maintenance and Adjustment

Step-by-step instructions are provided for calibrating and adjusting critical sections of the receiver, such as the PLL, RF/IF amplifiers, and squelch. Required test equipment and measurement conditions are clearly outlined.

Further Information

For detailed schematics, PC board views, and a complete parts list, please refer to the respective sections within this service manual.