This service repair manual covers the ALINCO DR135, DR235, and DR435 series of Two-Way Radio Transceivers. These devices are engineered for robust amateur radio communication, offering user-selectable output power and high sensitivity receivers. Designed to operate from an external 13.8 VDC power source, these transceivers provide reliable performance across VHF and UHF frequency bands, depending on the specific model. Notable features include multiple memory channels, programmable scanning functions, and CTCSS/DCS tone squelch capabilities, making them versatile tools for amateur radio enthusiasts.

The purpose of this manual is to provide comprehensive guidance for the maintenance, troubleshooting, and repair of your ALINCO transceiver. It details essential procedures, including frequency alignment, power output calibration, and component replacement for common issues such as transmitter power fluctuations or receiver audio distortion. This document is intended for owners, technicians, and mechanics, offering the technical specifications, diagnostic tool recommendations, and step-by-step instructions necessary to ensure the optimal performance and longevity of your equipment.