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1. GENERAL INFORMATION
1-1. Introduction and Description
This manual explains the installation, operation and maintenance of the ACOM2000A automatic
HF linear amplier.
The ACOM2000A is a complete and self-contained linear amplier that covers all amateur bands
from 1.8 through 30MHz, has automatic self-tune capability, and provides up to 1500W output
power with less than 60W exciter drive. The amplier can tolerate loads up to 3:1 VSWR (2:1
on 160 meters) and the process of matching the antenna impedance to the optimum load of the
tubes is automated. It features a Remote Control Unit (RCU), contains nonvolatile memory for
settings on up to ten different antennas per frequency segment, and offers command capability
for use with an external automatic antenna selector and/or automatic antenna tuner. Transmit
/ receive switching is capable of full break-in operation (QSK) via an internal vacuum relay.
All indicators and controls (except the primary mains switch and indicator) are available via the
Remote Control Unit - RCU. All command input to the RCU is menu-driven.
1-2. Owner Assistance
If assistance is needed, you should contact your local dealer. If necessary, your dealer will
contact ACOM for additional guidance. If you still have an issue you need to discuss with one
of ACOM's specialists, the contact information is as follows: fax: + 359 2 920 96 56, e-mail:
acom@acom-bg.com, acom@mail.orbitel.bg or by mail: blvd.”Nikola Mushanov” 151, 1330
Soa, Bulgaria.
1-3. Equipment Supplied and Options
The ACOM 2000A amplier is shipped in two cardboard cartons. One carton contains the power
transformer; the second carton contains the amplier. The remote control unit (RCU) is shipped
inside the amplier in the area where the power transformer will be mounted.
There are several individual purchase options available.
They are:
1) An auxiliary EXTERNAL FAN for continuous modes of operation (rear panel mount)
2) CAT CABLES for connection to the supported transceivers
3) The TECHNICAL SUPPLEMENT to this manual, containing electrical diagrams, technical
details on operation and maintenance, as well as a list of command set and local network rules
for RS232 operation.
The Automatic antenna selector ACOM 2000S and Remote antenna switch ACOM 2000SW
are especially designed to complete your ACOM system.
1-4. Features
• Automated matching of the antenna impedance to the optimum load of the tubes during initial
preparation of user tunings.
• Easy to operate. No operator intervention is required when changing antennas or frequency.
Thus the risk of inadvertent errors, such as incorrect antenna selection or failure to change
band switch, is eliminated.
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