Equipment information

Ameritron AL-572 Amplifier
Manufacturer
Ameritron
Model AL-572
Date
Category: Radio, Communication
Group Amplifier
Description LINEAR POWER AMPLIFIER
Information
                                    The Ameritron AL-572 is a 1000 watt CW, 1300 watt PEP
(nominal output power) linear
amplifier that operates on all Amateur bands from 160
through 15 meters (WARC bands and ten
meters with reduced performance). The AL-572X and AL-572Y
are export models that operate
from 160 through 10 meters.
The AL-572 uses four 572B tubes 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, and automatic bias
switching to make this the best featured
and most reliable 572B amplifier available. The AL-572 and
AL-572Y are factory-wired for 120
volt, 50/60 Hz ac line voltage. The AL-572X is factory wired
for 240 volts. All models are easily
converted to other supply voltages between 90 and 250 volts ac.

These manuals are available for the above equipment:

Ameritron -- AL-572 -- Service and User Manual
File name Ameritron-5880-Manual-Page-1-Picture
Manual Type Service and User Manual
Pages 37
Size 125.54 Kbytes (128554 Bytes)
Language english
Revision
Manual-ID/Number
Date
Quality Electronic document, no scan, very well readable.
Upload date
MD5 f4cf5ec9c075239824d087272bfddb3d
Downloads 255 since 29 April 2014
Information
Introduction.................................................................................................................................1
Unpacking Instructions
................................................................................................................2
Features
.......................................................................................................................................3
AL-572 Technical
Specifications.................................................................................................4
Input
................................................................................................................................4
Output
..............................................................................................................................4
Efficiency
.........................................................................................................................4
Power Supply
...................................................................................................................4
Tube
................................................................................................................................5
Metering..........................................................................................................................5
ALC.................................................................................................................................5
Relay
...............................................................................................................................5
Connectors
.......................................................................................................................5
Physical
............................................................................................................................5
General
Information....................................................................................................................6
Safety Interlock
................................................................................................................6
Peak Envelope Power vs. Average Power
.......................................................................6
Circuit Descriptions
.....................................................................................................................7
ALC.................................................................................................................................7
Dynamic
Bias...................................................................................................................7
Wattmeter
Circuit.............................................................................................................8
Power Supply
...............................................................................................................................8
Filament Supply
...............................................................................................................8
Plate (HV)
Supply............................................................................................................8
Meters
.........................................................................................................................................8
Current Meter (plate and grid)
.........................................................................................8
Multimeter.......................................................................................................................9
Multimeter
Functions...........................................................................................9
HV............................................................................................................9
REF
..........................................................................................................9
ALC..........................................................................................................10
ALC SET
.................................................................................................10
Tube
Life.....................................................................................................................................10
Export Modifications
...................................................................................................................11
Technical
Assistance....................................................................................................................12
Notes
...............................................................................................................................12
Installation Guidelines And Suggestions
.....................................................................................13
Location Of The Amplifier
..............................................................................................13
Ventilation.......................................................................................................................13
Power Connections
..........................................................................................................13
Grounding
........................................................................................................................14
Transformer
Connections.................................................................................................15
Interconnections
...........................................................................................................................16
Operating Instructions And
Guidelines........................................................................................16
Front Panel Controls
........................................................................................................16
"MULTIMETER" Switch
....................................................................................16
"OFF-ON"
Switch................................................................................................16
"STBY-OPR"
Switch...........................................................................................16
"PLATE"
Control.................................................................................................17
"LOAD" Control
..................................................................................................17
ALC Metering, Controls, and Adjustments
.....................................................................17
ALC Metering Functions
.....................................................................................17
ALC..........................................................................................................17
ALC SET
.................................................................................................18
ALC
Controls.......................................................................................................18
ALC Adjustments
................................................................................................18
SSB Operation
.........................................................................................18
CW Operation
..........................................................................................18
Rear-panel "ALC LIMIT"
control........................................................................19
ALC Limit Adjustment (rear
panel).....................................................................19
Driving
Power..................................................................................................................20
Tube and Component Life
...............................................................................................20
Tuning.............................................................................................................................21
Tuning
Procedure.................................................................................................22
"ALC SET"
control..............................................................................................24
Additional SSB
Notes......................................................................................................25
AM (Amplitude Modulation)
Operation..........................................................................25
Audio Distortion
..............................................................................................................25
FM (Frequency Modulation), RTTY, and DIGITAL OPERATION
...............................26
QSK
Operation.................................................................................................................26
Periodic
Maintenance...................................................................................................................26
Parts List
.....................................................................................................................................28
Power Supply / SWR Board (50-0057-1)
.......................................................................28
Tuned Input Board
(50-0057-2).......................................................................................29
AL-572 Tuned Input
Chart...............................................................................................29
Meter Board (50-0057-3)
.................................................................................................29
Timer / Overload Board
(50-0057-5)...............................................................................30
AL-572 Main Chassis Parts List
......................................................................................31
AL-572 Wiring
Diagram..............................................................................................................32
Power Supply / SWR Board
Schematic...........................................................................33
Tuned Input Board
Schematic..........................................................................................34
Meter Board
Schematic....................................................................................................35
Ameritron-5880-Manual-Page-1-Picture
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