AMERITRON AL-80A User Manual

AMERITRON AL-80A
HIGH POWER
LINEAR AMPLIFIER
INSTRUCTION MANUAL
The Ameritron AL-80A Linear Amplifier is designed for over 1000 Watts
output SSB PEP (850 Watts output on CW) with high efficiency and total
reliability. The AL-80A covers the amateur radio bands 160 through 15
meters. It also features wide frequency coverage for MARS and other
services authorized to operate at high power.
The AL-80A uses an Eimac 3-500Z high-mu triode in a class AB 2 ground¬
ed grid circuit.
A built-in ALC circuit prevents the amplifier output from flat-topping if
the exciter gain is inadvertantly set too high.
The AL-80A is factory wired for 117V, 50/60 Hz primary line voltage.
DIVrSION OF
PRIME INSTRUMENTS, INC.
9805 Walford Avenue • Cleveland, Ohio 44102
Printed in U.S.A.
F-1035

AMERITRON AL-80A Specifications

General

Brand	AMERITRON
Model	AL-80A
Category	Amplifier
Language	English

Summary

Ameritron AL-80A Amplifier Overview

Ventilation Guidelines

Automatic Level Control (ALC)

Power Connections and Wiring

Metering Functions

Plate Voltage, Current, and Watts Readings

Explains readings for Plate Voltage (HV), Plate Current (Ip), and Peak RF Watts (PO).

ALC Meter Functionality

Describes the ALC meter's indication of relative drive level.

Installation and Connection Diagram

Tuning Instructions

Tuning Chart and Frequency Coverage

Typical Tuning Chart

Provides typical settings for plate and load controls across various bands.

Standard Frequency Coverage

Details the frequency ranges covered by the AL-80A and AL-80AX models.

Schematics and Parts List

AL-80A Schematic Diagram

Detailed circuit schematic of the AL-80A amplifier.

AL-80A Tuned Input Chart

Chart showing input/output settings for various bands.

Parts List

Comprehensive list of components used in the AL-80A.

Technical Specifications

Input Specifications

Details input circuit type, VSWR, and drive power requirements.

Output Specifications

Details output circuit type and power ratings for various modes.

Power Supply Specifications

Details power supply circuit, voltages, current, and transformer specs.

Unpacking and Tube Installation

Unpacking Instructions

Guidance on carefully removing the amplifier from its packaging.

Tube Installation Procedure

Steps for safely installing the 3-500Z tube and plate cap.