ACOM 1010 | HF Linear Valve Amplifier

Description

Usage
The ACOM 1010 is a self-contained linear amplifier that covers all amateur bands, from 1.8 through 29.7 MHz. It provides over 700 W PEP of output power (or 500 W in continuous-duty operation) with less than 60 W of drive.

Easy to operate
The plate-load True Resistance Indicator (TRI) is an ACOM innovation that provides quick and precise tuning, typically in less than 10 seconds. The AUTO-OPERATE function will return the amplifier to the OPERATE mode automatically after each protection trip, saving time and avoiding manual switching.

Antenna tuner as an option
The amplifier does not need an external antenna tuner as long as the antenna’ SWR is 3:1 or lower.

User-friendly and durable
This amplifier is both user-friendly and self-monitoring. It is designed to safely withstand up to 240 W of reflected power, up to 100 milliseconds of drive spikes (RF “tails” after a PTT or KEY release), and even operator tuning errors. It is also capable of operating at more than half its designed output power at only 75% of nominal line (mains) voltage. Because it can tolerate deep voltage drops (down to zero for 10 milliseconds) and 15% line voltage spikes, it is particularly suited for use in portable environments, such as field days and DXpeditions.

LED bar-graph display
The upper LED bar-graph always reads peak forward power (except for the service functions) while the lower LED bar-graph is for the reflected power. LED warning indicators are provided for abnormal conditions of grid 1, grid 2, and plate parameters.

Antenna selection
Two antenna outputs are selectable on the front panel of the amplifier.

Efficient tuning
Antenna matching can be achieved in less than 10 seconds and at a quarter of nominal output power, which produces lower risk of interference to other stations and greater safety to the amplifier components.

Transceiver-independent
The amplifier operates without special signaling from the transceiver. It needs only “ground on TX” and 60 W RF drive power to operate at full output power.

Broadband input matching
Broadband input matching circuitry offers excellent loading characteristics for the driving transceiver, from 1.8 MHz to 30 MHz.

Single tube operation
Starting January 1st, 2024, a NEW single ACOM 4CX800A high-performance ceramic-metal tetrode with plate dissipation of 800 W (forced air cooling, grid-driven) is used for maximum efficiency.
Till the end of 2023, the amplifier was produced with Svetlana GU74B (4CX800A) tube.

Permanent monitoring and protection of the plate and grids currents
The Bias Optimizer minimizes heat dissipated by the tube, assuring tube longevity.

High voltage protection
Design of the high-voltage power supply eliminates the danger of turn-on transients affecting sensitive devices connected to the same line (mains) circuit. Moreover, the amplifier can be configured for 8 different nominal line voltages: 100, 110, 120, 200, 210, 220, 230, or 240 VAC, 50 or 60 Hz.

Frequency Coverage

• All amateur bands in the 1.8-29.7 MHz frequency range;
• Extensions and/or changes on request;

Power Output

• 700 W PEP or 500 W continuous carrier;

Intermodulation Distortion

• Better than 35 dB below rated output;

Hum and Noise

• Better than 40 dB below rated output;

Harmonic Output Suppression

• Better than 50 dB below rated output;

Input and Output Impedances

• Nominal value: 50 Ohm unbalanced, UHF (SO-239) type connectors;
• Input circuit: broadband, SWR less than 1.3, 1.8-30 MHz continuously (no tuning, no switching);
• Bypass path: SWR less than 1.1, 1.8-30 MHz continuously, 200 W maximum;
• Output (antenna) impedance matching capability: SWR up to 3 or higher;

RF Gain

• 11 dB typically, frequency response less than 1 dB (50-70 W drive power for rated output);

Mains Power Supply Voltage

• 85-132 VAC / 170-264 VAC (100, 110, 120, 200, 210, 220, 230 & 240 V nominal taps, +10% -15% tolerance), 50-60 Hz, Single phase;

Mains Power Consumption

• 1200 VA at rated output;

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)

• WxDxH: 402x315x166 mm, 17 kg (15.9×12.4×6.6 inches, 37.5 lbs.);

Shipping Size & Weight

• WxDxH: Approx. 580x460x340 mm, 20.0 kg (22.9×18.2×13.4 inches, 44.1 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.