AL811H SERVICE PDF

Neutralizing H. Tuning Supplement. Skip down to schematic. The older ALH prior to drive resistor modification with good tubes and stable power line, when properly tuned and operating in the linear region , has about 11 dB gain. This is an amplification of about twelve times. With 60 watts of drive power, output is watts.

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No picture available! Maybe you can upload a photo for the Ameritron ALH? If you have any other manuals for the Ameritron ALH you can upload the files here. These terms and conditions contain rules about posting comments.

By submitting a comment, you are declaring that you agree with these rules:. Ameritron ALH Amplifier. Radio Communication. Long Tube Life: The A tubes are long life, reliable transmitting tubes. The Grid Current meter provides a continuous reading of the A grid current to indicate proper loading of the Amplifier. Multi-voltage Heavy Duty Transformer: A unique "buck-boost" winding allows adjustment of primary voltages to match a wide range of line voltages centered on and volts.

This versatile Ameritron feature allows the user to maintain optimum voltages on the tubes and other components to obtain maximum performance and life. Vernier Plate and Load Adjustments: Both tuning controls have vernier reduction drives for smooth tuning logging scales for accurate and rapid tune-up.

Safety interlock: AC input power is removed from the transformer when the cover is removed. Never attempt to defeat this switch. ALC: The drive level is detected to provide a control voltage for the exciter. ALC prevents over-driving of the linear and reduces distortion from excessive drive power. Neutralization Circuit: Reduces unwanted feedback to improve performance. Service and User Manual.

Comments 3. Topic: Ameritron ALH. Gerald says That's the crappiest manual ever. No "Fault or Problem" page and possible Cause. Luther W. Lipfird Jr says OK I found it. I didn't scroll down far enough. Page 1 of 1. Add Comment. Notify me of new comments via email. I have read and agree to the terms and conditions. By submitting a comment, you are declaring that you agree with these rules: Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.

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Faulty Ameritron AL-811H

Flashover in a tube of an unprotected RF amplifier. The powerful spark induced scorching and inside a hole in the glass. The PA had no additional protection and had not been operational for years. My inspection yielded a burned grid resistor and a partially conductive varistor on. Irregularities in the schematic.

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AMERITRON AL-811H Instruction Manual

No picture available! Maybe you can upload a photo for the Ameritron ALH? If you have any other manuals for the Ameritron ALH you can upload the files here. These terms and conditions contain rules about posting comments.

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Long Tube Life: The A tubes are long life, reliable transmitting tubes. The Grid Current meter provides a continuous reading of the A grid current to indicate proper loading of the Amplifier. Multi-voltage Heavy Duty Transformer: A unique "buck-boost" winding allows adjustment of primary voltages to match a wide range of line voltages centered on and volts. This versatile Ameritron feature allows the user to maintain optimum voltages on the tubes and other components to obtain maximum performance and life.

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