Only the Ameritron AL-811H gives you four fully neutralized 811A transmitting tubes. You get absolute stability and superb performance on higher bands that can't be matched by un-neutralized tubes.
Ameritron mounts the 811A tubes vertically -- not horizontally -- to prevent hot tube elements from sagging and shorting out. Others, using potentially damaging horizontal mounting, require hard-to-find 811A tubes to retard harmful sagging and shorting.
Powerful 20 CFM computer grade fan -- not an open frame phonograph motor -- draws in cool air to pressurize the cabinet and efficiently cool your 811A tubes for an extra long life.
You also get efficient full-size heavy duty tank coils, computer grade capacitors, heavy duty high silicon core power transformer, slug tuned input coils, operate/standby switch, transmit LED, ALC, dual meters, QSK compatibility with QSK-5 option and much more.
800 Watts PEP, 600 Watts CW.All Band Operation:
Covers 160 - 10 Meters including WARC bands.Four 811A Tubes:
Uses four rugged, full neutralized low cost 811A PA tubes.Vertical Tube Mounting:
Prevents shorting of tube filament/grid, prolongs tube life.Fully Neutralized:
Improves stability and performance on higher bands.Input Tune Circuit:
Adjustable rear panel slug tuned input circuit.ALC Control:
Built-in adjustable ALC control.Vernier Reduction Drives:
Tuning and loading reduction drives make tuning smooth and easy.Dual Illuminated Meters:
Monitor vital operating functions.Heavy Duty Power Supply:
17 pounds, high silicone steel core transformer and computer grade filter capacitor gives 1700 volts high voltage at no load and 1500 Volts at full load.Multi-Voltage Operation:
User selectable for 100/110/120/210/220/230 VAC operation. Shipped with transformer installed and wired for 120 VAC for domestic model or 240 VAC for export model.Air-Cooled:
Quiet pressurized ventilation keeps tubes safely cooled.
QSK Compatible: Optional external electronic pin diode Transmit/Receive switch.Attractive Lexan front decalOperating Weight: