ACOM 1003 | HF + 6 m Linear Amplifier

ACOM 1003 rEVIEW ACOM pulled the wraps of its new 1003 RF Amplifier

and right away we knew it was going to be good.

With push-button 50% power reduction, and the ability run as both a class AB2

(for sideband and CW) and Class B (for full duty cycle modes like FT8 and RTTY),

the 1003 is a versatile, robust amplifier that’ll make a great upgrade for your ham shack. But what’s it like to operate in a real-world amateur radio station?

Frequency Coverage

• All amateur bands in the 1.8-54 MHz frequency range:
• 1.800 - 2.000 MHz (160 m band)
• 3.500 - 4.000 MHz (80 m band)
• 5.250 - 5.450 MHz (60 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)
• 50.000 - 54.000 MHz (6 m band)*
  (*) Please, refer the applicable regional band plans and laws for specific allocations and limitations.

Power Output

• 1000 W PEP or 900 W continuous carrier, with no limitation to the operating mode;
• In continuous carrier modes (RTTY etc.) for transmissions longer than 5 minutes, the external auxiliary fan must be mounted;

Intermodulation Distortion at rated power

• Better than 34 dB IMD3 with regard to one of the two tones (40 dB below PEP);

Hum and noise

• Not more than 4,5% (-27 dB) AM depth at rated power;

Harmonic Emissions Output Suppression

• 1.8-29.7 MHz - better than 50 dB below rated power;
• 50-54 MHz - better than 70 dB below rated power;

Input and Output Impedances

• Nominal impedance: 50 Ω unbalanced, UHF / PTFE coaxial connectors (SO-239A);
• Input circuit: factory tuned low-pass filters for best linearity and input SWR not more than 1.3 in every amateur band from 160 m to 6 m;;
• Bypass path SWR: not more than 1.1 continuously from 1.8 to 54 MHz;
• Minimum range of impedance matching capability at the output: all loads with SWR up to 3* at any phase angle;
  (*) The drive power must be reduced at SWR above 3 in order to keep the Reflected Power under 250 W.

HF Power Gain

• 12 dB ±1 dB (50 W - 80 W at the input for rated output power);

Mains Power Supply Voltage

• 90-132 VAC / 180-264 VAC (taps for 8 nominal voltages: 100, 110, 120, 200, 210, 220, 230 & 240 VAC, ±10% tolerance), 50-60 Hz, Single phase;

Mains Power Consumption

• 2000 VA @ at 240 VAC;

Safety and Electromagnetic Compatibility

• Complies with European Union's CE safety and electromagnetic compatibility requirements;
• Complies with the US Federal Communications Commission (FCC) regulations - FCC Identifier: 2AJXZ1003, Date of Grant: 03 June 2025;

Size & Weight (operating, excluding connected cables)

• WxDxH: 423x398x195 mm, 21.0 kg (16.7x15.7x7.7 inches, 46.3 lbs.);

Shipping Size & Weight

• WxDxH: Approx. 632x583x413 mm, 25.0 kg (24.9x23.0x16.3 inches, 55.1 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 

• Usage
  ACOM 1003 is a self-contained, full-featured linear amplifier covering all amateur bands from 1.8 MHz to 54 MHz. It delivers 1000 W power output PEP or 900 W continuous carrier, with less than 80 W input power.

  Easy to operate
  Antenna matching is made simple by the True Resistance Indicator (TRI) which is a bar scale for accurate setting of the plate-load impedance real part. A front-panel button-controlled input attenuator allows for easy drive power reduction during tuning and restoration after that, without the need of transceiver re-adjustments. Peak power bar graph indicator, operational parameters and text messages are displayed during operation on a two-line OLED display. Switching RX/TX is fast and CW QSK compatible, using a silent HF reed relay.

  No external antenna tuner needed
  No need of external antenna tuner (ATU) for antenna SWR up to 3. A SWR up to 3 is allowed at 1000 W forward output to the antenna.

  User-friendly and durable
  

  • Operator selectable class AB2 mode for best linearity in SSB mode or class B for reduced plate dissipation in continuous digital modes;
  • Operator selectable modes of full or 50% reduced power output with no efficiency deterioration;
  • Auto controlled cooling air flow;
  • Continuous monitoring of amplifier parameters and tube protection;
  • Able to monitor 18 operator-selectable amplifier parameters on the display;
  • Unique ACOM protection for the bands switch (BAND);
  • Original ACOM TRI prompt: bar scale for quick and accurate setting of the plate-load impedance real part while matching the antenna;
  • Factory tuned input lowpass filters for best linearity and input SWR less than 1.3 in each amateur radio band.

  OLED comment display
  Two-line OLED display with peak-reading forward-output power bar graph and 18 operator-selectable amplifier parameters on the display.

  Three antenna outputs
  Three antenna outputs are selectable by a push-button on the front panel.

  Less noise in the shack
  HF antenna reed relay for a virtually silent, QSK compatible CW operation.

  Schrijf een beoordeling

  Je moet inloggen of registreren om een beoordeling te plaatsen.