ACOM 2000A | Automatic HF Linear Amplifier

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Frequency Coverage

• All amateur bands from 1.8 to 29.7 MHz frequency range;
• Extensions and/or changes on request;

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;

Cooling

• Full cabinet forced-air;
• Rubber isolated blower;

HV Transformer

• 3.5 kVA with strip-wound Unisil-H core;

Mains Power Supply Voltage

• 90-132 VAC / 180-264 VAC (100, 120, 200, 220 & 240 V nominal taps, +10% -10% tolerance), 50-60 Hz, Single phase;

Mains Power Consumption

• Up to 3500 VA at rated output from 200/240 VAC mains supply;
• Up to 2400 VA at 1000 W output from 100/120 VAC mains supply;

Amplifier-RCU Connecting cable

• Cable length: 3 m;
• Cable length: 20 m (option);

Safety and Electromagnetic Compatibility

• Complies with CE safety and electromagnetic compatibility requirements, as well as with the US Federal Communications Commission (FCC) regulations;

Size & Weight (operating, excluding connected cables)

• Amplifier, WxDxH: 440x500x180 mm, 36.5 kg (17.3x19.7x7.1 inches, 80.5 lbs.);
• RCU, WxDxH: 170x138x63 mm, (6.7x5.4x2.5 inches);

Shipping Size & Weight

• Shipped in 2 cartons;
• Amplifier carton (including RCU and connecting cable), WxDxH: Approx. 610x590x390 mm, 25.5 kg (24.1x23.3x15.4 inches, 56.3 lbs.);
• HV Transformer carton, WxDxH: Approx. 330x390x370 mm, 17.5 kg (13.0x15.4x14.6 inches, 38.6 lbs.);
• Please, contact us for shipment details;

Operating environments

• Temperature range: 0 to +50 degrees Celsius (32 degrees F to 122 degrees F);
• Relative air humidity: up to 95% @ +35 degrees Celsius (95 degrees F);
• Height above sea level: up to 3050 m (10000 ft) without output deterioration.