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Continental Electronics 816R - User Manual

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TRAINING
MANUAL
O16R
FM
TRANSMITTERS
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BIRMINGHAM.
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35226-0509
TELEPHONE
(205)
822-1078
FAX
(205)
822-6441
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dhultsmin@contelec.com
4212
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DALLAS.
TX
78227
(214)
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Summary

General Information

Introduction

Overview of the 816R FM transmitters, their capabilities, and power outputs.

Functional Description

Describes the exciter, solid-state driver, and power amplifier stages of the transmitter.

Physical Description

Details the transmitter's cabinet structure, component layout, and sections.

Operation

General Operation

Explains local and remote operation modes and basic monitoring.

Initial Turn-On Procedure

Step-by-step guide for safely powering up the transmitter for the first time.

PA Tuning and Loading

Procedures for optimizing PA grid tuning and loading for best efficiency.

Maximum Power Output Adjustment

Method to set the transmitter's maximum power output to authorized station levels.

Automatic Recycle Resetting

Explains automatic transmitter restarts after certain overload conditions.

Theory of Operation

General Theory

Overview of 816R transmitter operation, features, and protection circuits.

Functional Description

Details the signal path from exciter to antenna via amplifier stages.

RF Circuits Overview

Describes the exciter, IPA module, and power amplifier RF path components.

IPA Amplifier Module

Explains the design, rating, and protection features of the IPA module.

RF Power Amplifier Details

Describes the PA tube, its tuning, loading, and bias circuits.

Directional Coupler Function

Describes the directional coupler's role in measuring forward/reflected power.

Power Supplies and Control Circuits

Power Supply Overview

Overview of the transmitter's five separate power supplies.

PA Plate and Screen Power Supplies

Explains the PA plate and screen power supply circuits and their control.

Power Control Units

Details the SCR power control unit and the power control regulator.

Filament Voltage Regulator

Describes the automatic filament voltage regulation system and its operation.

Primary Power Distribution and Overload Circuits

Power Distribution and Turn-On

How primary power is distributed and the transmitter turn-on sequence.

FWD;REFL & Auto Power Control

Functions of the forward/reflected power calibrate and auto control unit.

Overload and Recycle Circuits

Describes overload indication, memory, and automatic recycling.

Power Failure Recycle

Explains circuit for restoring operation after momentary power loss.

Transmitter Cooling

Ventilation Methods

Discusses exhaust fans and positive pressure ventilation for cooling.

Exhaust Duct and Air Filter

Guidelines for exhaust ductwork and external air filters for dusty environments.

Mechanical and Environmental Characteristics

Weight, Size, Finish

Details transmitter physical dimensions, weight, and finishes.

Environmental Factors

Covers ventilation, ambient temperature, humidity, and altitude.

Electrical Characteristics

Frequency, Power, Impedance, VSWR

Key electrical output specifications of the transmitter.

Power Source and Line Variations

Required power source and tolerance for line voltage variations.

Modulation and Noise Specifications

Details modulation input, audio response, and noise levels.

816 R Transmitter Information Sheets

Eimac Tube Bulletin

Bulletin regarding EIMAC 4CX15,000A and YC130 tubes and filament management.

PA Grid Adjustment Procedure

Procedure for adjusting PA grid tuning and coupling for optimal performance.

Power Controller Checkout Procedure

Steps for testing the power controller functionality and individual cards.

816 R Phase Loss Wiring Modification

Modification Procedure

Details a wiring modification to protect phase loss circuits on blower/fan motors.

Drawings

Amplifier Cavity and Component Shelf Diagrams

Diagrams of key transmitter sub-assemblies like the PA cavity.

Transformer and Wiring Diagrams

Schematics for transformer connections and primary AC wiring.

Continental Electronics 816R Specifications

General IconGeneral
BrandContinental Electronics
Model816R
CategoryTransmitter
LanguageEnglish