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General warning for handling sensitive devices.
Specific advice on handling ESD-sensitive components.
Critical safety precautions for operating and maintaining the equipment.
Overview of the manual's scope and service policies.
Defines the intended audience and content currency of the manual.
Guides users on navigating the manual's sections and content.
Details product support, warranty, and post-warranty services.
Lists key technical parameters and specifications for the radio models.
Introduces the chapter's content on available models and accessories.
Presents a detailed chart listing various radio models and their configurations.
Lists available accessories for the radio models.
Introduces the chapter on radio maintenance procedures.
Provides step-by-step instructions for disassembling the radio.
Provides step-by-step instructions for reassembling the radio.
Offers visual diagrams of radio components and associated parts.
Lists recommended tools and aids for servicing the radio.
Lists standard and specific test equipment required for radio servicing.
Outlines the process for tuning the radio's parameters.
Introduces the chapter explaining the radio's theory of operation.
Explains the functions and architecture of the radio's controller.
General information on audio circuits.
Explains the circuitry involved in transmitting audio signals.
Explains circuits used for transmitting signalling data.
Explains the circuitry for receiving audio signals.
Explains circuits for receiving signalling data.
Explains the initial stages of the receiver.
Explains the power amplifier stage.
Explains the radio's frequency synthesis system.
Introduces the chapter for 216-246 MHz models.
Lists the 216-246 MHz models available for the GM950i.
Provides detailed technical specifications for the 216-246 MHz band.
Outlines tuning procedures specific to the 216-246 MHz band.
Introduces the chapter's content for the 216-246 MHz models.
Explains the controller's operation for the 216-246 MHz models.
General information on controller board audio and signalling circuits.
Explains transmit audio circuits for the 216-246 MHz band.
Explains transmit signalling circuits.
Explains receive audio circuits.
Explains receive signalling circuits.
Explains the receiver front-end.
Explains the power amplifier stage.
Explains the radio's frequency synthesis system.
Lists PL and DPL codes for radio programming.
Lists specific frequencies that can cause internal interference.
Details the pin functions of the 16-pin accessory connector.
Describes the 8-pin Telco microphone connector pinout.
Explains modifications for base station use.
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General
