ACOM 2000A

Usage

The ACOM 2000A Automatic HF Linear Amplifier is the world's most advanced HF amplifier designed for amateur use. The ACOM 2000A is the first amateur HF amplifier to include both fully automatic tuning and sophisticated digital control capabilities. This revolutionary new amplifier delivers maximum legal power in all modes and operates on all HF amateur bands.

A New standard in amplifier features and performance

The ACOM 2000A represents a major advance in the state-of-the-art in HF amplifier design. It changes forever the way radio amateurs employ HF power amplifiers in their stations.

Instantaneous, automatic tuning makes slow, cumbersome band changes a thing of the past.

A built-in, wide-range antenna tuner matches loads with high SWR (up to 3:1), often eliminating the cost and complexity of an external, high-power antenna tuner.

Advanced protection circuits ensure amplifier safety under every potential combination of operating conditions.

Remote diagnostic features and modular design ease fault isolation and repair.

Frequency Coverage

All amateur bands from 1.8 through 29.7 MHz:

• 1.800 - 2.000 MHz (160 m band)
• 3.500 - 4.000 MHz (80 m band)
• 7.000 - 7.300 MHz (40 m band)
• 10.100 - 10.150 MHz (30 m band)
• 14.000 - 14.350 MHz (20 m band)
• 18.068 - 18.168 MHz (17 m band)
• 21.000 - 21.450 MHz (15 m band)
• 24.890 - 24.990 MHz (12 m band)
• 28.000 - 29.700 MHz (10 m band)
• Please, refer the applicable regional band plans and laws for specific allocations and limitations;
• In specific business cases, extensions or changes of the frequency coverage can be discussed, but this must be agreed upon before ordering. In any case, this is not the producer's obligation and can not be against local rules and laws.

Rated Power Output

1500 W, PEP or continuous carrier, no mode limit (at 200/240 VAC mains supply);

In continuous modes (RTTY, etc.) for transmissions longer than 15 minutes (up to several hours depending on ambient temperature), the optional auxiliary fan must be mounted);

Automatic Tuning

Load impedance matching - less than 3 seconds;

Band change - less than 1 second;

Segment change - less than 0.2 seconds;

Tuning memories

Non-volatile memory for up to 10 antennas per frequency segment;

Intermodulation Distortion

• Better than 35 dB below rated PEP output;

Hum and Noise

Better than 35 dB below rated output;

Harmonic Output Suppression

Better than 50 dB below rated output;

Drive power

Typically 50 W for 1500 W output;

Input and Output Impedances

• Nominal value: 50 Ohm unbalanced, UHF (SO-239) type connectors;
• Input circuit: broadband, SWR below 1.3:1, 1.8-30-MHz continuously (no tuning, no switching);
• Bypass path SWR below than 1.1:1, 1.8-30 MHz continuously;
• Output (antenna) impedance matching capability: SWR up to 3:1 (2:1 for 160 m) or greater at reduced output levels; Automated;

RF Gain

14.5 dB typically, frequency response less than 0.5 dB (50-60 W drive power for rated output);

T/R and keying

Vacuum Relay: QSK capable;

Tubes and Circuit

• 4CX800A/GU74b tetrodes (2 pieces); resistive grid, PI-L output with RF negative feedback. Regulated screen grid voltage;

ALC

ALC: grid-current derived, -11 V max, rear panel adjustable;

Metering

Comprehensive. Remote Control Unit provides flexible monitoring of all amplifier operating parameters;

Protection

Grid and screen current limiting;

Power inrush (soft-start provided);

Trip to excessive reflected power;

RF arcs;

Password access protection if needed;

Correct T/R sequencing;

Tube exhaust overheat;

Cover interlock and HV crowbar;

Fault Diagnosis

Remote Control Unit display and LED's plus information for 12 most recent events;

Remote diagnostic via eBox Ethernet Remote Control Device (option);

RS-232 interface for PC connection;