Instruction manual

AL-800 Instruction Manual
1
Ameritron AL-800
1200 Watt Linear Amplifier Instruction Manual
The Ameritron AL-800 is a 1200 watt PEP output linear amplifier that operates from 160 through
15 meters. The AL-800X and AL-800Y are export models that operate from 160 through 10 meters.
Export modification instructions are only available with proof of a valid amateur radio license.
The AL-800 uses a single 3CX800A7 tube in a class AB2 grounded grid circuit. High-quality
power supply and RF components combine with an accurate peak-detecting directional coupler,
front panel adjustable true ALC circuit, electronic grid current and thermal overload protection, and
automatic bias switching to make this the best featured and most reliable single 3CX800A7
amplifier available. The AL-800 and AL-800Y are factory-wired for 120 volt, 50/60 Hz ac line
voltage. The AL-800X is factory wired for 240 volt, 50/60 Hz ac line voltage. All models are
easily converted to other supply voltages between 90 and 250 volts ac.
WARNING:
NEVER APPLY POWER TO THIS AMPLIFIER WITH THE COVER REMOVED!
CONTACT WITH THE VOLTAGES INSIDE THIS AMPLIFIER CAN BE FATAL!
PLEASE READ THIS MANUAL BEFORE ATTEMPTING TO OPERATE EQUIPMENT!
Improper or abusive operation of this amplifier can damage the tube or other components in
this amplifier. Damage caused by improper or abusive operation is
not
covered under the
warranty policy.
Unpacking Instructions
Remove the 3CX800A7 tube from its shipping carton. Carefully unwrap the tube and inspect it for
visible damage. Look for a dented anode cooler and broken or bent pins. Roll the tube over slowly
and listen for loose internal materials. Contact either your Ameritron dealer or Ameritron
immediately if any damage exists.
Carefully lift the amplifier from the shipping carton, and place it on a firm, level surface. Inspect
the amplifier for shipping damage. Contact either your Ameritron dealer or Ameritron immediately
if any damage exists. Remove the cover screws with a #2 Phillips screwdriver. Save the screws to
re-secure the cover. Carefully lift the rear of the cover while sliding the cover back.
The AL-800 is
shipped with the rubber chimney, fuses and fuse caps packed inside the amplifier.
Additional
screws will be included in the fuse pack if they are required.
WARNING:
Never remove the cover while this amplifier is connected to the power mains!
Contact with the voltages in this amplifier can be fatal.
The tube must be installed in its socket prior to operation. Observe the pin configuration on the tube
and the socket. Two of the pins are separated by a large space. Carefully observe the pin alignment