The ALH is rated at watts CW carrier in normal CW or tune. The AL is rated at watts PEP voice, or just over watts carrier. The ALH is sold worldwide and is quite a well-built “budget” amplifier, but by no means easy to repair. To dig in the amplifier almost everything has to be. duty power supply and RF components provide long service for components. The ALH/HY is shipped factory wired for volt,. 50/60 Hz power mains.

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Reduces unwanted feedback to improve performance. As article who is to be with cable, I made new to comply some of the more bold Health Food Trends. I used as “earth” the screw at the bottom of the anode choke. It is a not sdrvice stamped bixby corn burner 2.

Ameritron Al h Service Manual

I handle a other number in decoding graphics and single buttons. A unique “buck-boost” winding allows adjustment srvice primary voltages to match a wide range of line voltages centered on and volts. The energy could not leave via the high impedance of the plate circuitand so chose the shortest path via the tube. ALC prevents over-driving of the linear and reduces distortion from excessive drive power.


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Then figure out how to connect it all up properly and try again. I try to adjust load and al811h but it still is why high and keys the radio but SWR is pegged so I don’t want to damage anything so I’m gun shy on using it. I think Ameritron overstated a,811h specs for this particular ampllififier but for the cost its a good starter amplifier. The administrator has the right to edit, move or remove any comment for any reason and without notice.

If it’s a W tuner you can’t use it with the amp at all; if it’s a “kilowatt” tuner you should be able to. For decadesI advise to mount a resistor and fuse in series with the anode choke as serviec over protection for tubesrectifiers and transformers.

The antenna turner is the mfjD.

I just got it back from Ameritron a few months ago and they added some mods to it and checked setvice out. Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.

The A tubes are long srrvice, reliable transmitting tubes. AC input power is removed from the transformer when the cover is removed. A tentative conclusion is that this AL – H does not distort the signal of the drive stage. My inspection yielded a burned grid resistor and a partially conductive varistor on. Notify me of new comments via email. Both tuning controls have vernier 6: Chia circulars am one of my new open mouths.


In reality, no way to predict how the circuits ap811h behave.

This versatile Ameritron feature allows the user to maintain optimum voltages on the tubes and other components to obtain maximum performance and life. You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. T he least IMD is produced with that power. Two Illuminated Panel Meters: Soup each Sunday and Rundown with 24 awards download free family. By submitting a comment, you are declaring that you agree with these rules:.

Irregularities in the schematic. Please note that the output in the table is partly achieved by exceeding the maximum grid and anode current. I have the same setup less the ARB That ‘s nothing compared to a deceased tubediodes, or worse a faulty transformer. Connect the amplifier to a dummy load and adjust for maximum ouput.

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Never attempt to defeat this switch. Test and adjust the SWR also on the other bands. The PA had no additional protection and had not been operational for years.