Command Technologies HF-2500 MAGNUM Manual

Command Technologies HF-2500 MAGNUM Manual

Linear amplifier

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COMMANDER HF-2500/
HF-2500 MAGNUM
LINEAR AMPLIFIER
MADE IN THE U.S.A. BY HAMS FOR HAMS
COMMAND TECHNOLOGIES, Inc.
15719 CR 2.50
P. O. BOX 326
EDON, OHIO 43518-0326
419 459-4689
800-736-0443

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Summarization of Contents

Initial Setup and Operation
Introduction to the Amplifier
Overview of the Commander HF-2500/HF-2500 MAGNUM linear amplifier.
Unpacking Instructions
Steps for safely removing the amplifier from its shipping carton.
Safety Precautions and Warnings
General Cautions and Warnings
Critical safety precautions for operating the amplifier, including high voltage risks.
Accessory Usage Warnings
Precautions regarding the use of accessories with the amplifier to prevent damage.
Hardware Installation Guide
Transformer Installation
Step-by-step guide for installing the hypersil transformer.
Tube Installation
Procedure for correctly installing the 3CPX800A7 tubes into the amplifier.
Amplifier Technical Details
Theory of Operation
Explanation of the amplifier's design principles, including tubes and circuit configuration.
Metering Functions Explained
Details on the amplifier's illuminated panel meters and their readings.
Tuned Input Circuit Adjustments
Tuned Input Circuit Description
Description of the L-C-L or 'T' impedance matching circuits.
Adjusting Tuned Input Circuits
Procedure for adjusting tuned input circuits for minimum SWR.
Automatic Level Control (ALC) Adjustment
Automatic Drive Limiting Control
Explanation of the ALC circuit for preventing amplifier overdrive.
A.L.C. Adjustment Procedure
Procedure for setting the Automatic Level Control (ALC) for negative going voltage.
Amplifier Circuitry Details
Output Filter Circuit
Description of the Pi variable network filter and its function.
High Voltage Supply Operation
Details on the amplifier's high voltage supply, including voltage doubler/bridge.

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