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The New ACOM 1003 | HF + 6 m Linear Amplifier
SKU Part Number: ACOM 1003
ARRIVING IN MAY 2025 A new generation can be found with the ACOM 1003 is an autonomous and independent linear amplifier that covers all amateur...
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Product Accessories

ARRIVING IN MAY 2025

A new generation can be found with the ACOM 1003 is an autonomous and independent linear amplifier that covers all amateur radio bands from 1.8 MHz to 54 MHz. It delivers 1000 W power output PEP or 900 W continuous carrier with no limitation to the operating mode, with 50-80 W input power (from the transceiver).

Easy to operate
Antenna setup is made simple by a bar indicator for accurate setting of the actual load resistance at the tube anode (TRI). An operator-controlled input attenuator allows for an easy decrease of input power, without the need for transceiver adjustments. Peak power bar indicator, operational parameters and text messages are displayed during operation on a two-line OLED display. Switching receive/transmit is fast and OSK compatible, using a silent HF reed relay.

No external antenna tuner needed
No need for an external antenna tuner (ATU) for antenna SWR up to 3:1. A SWR up to 3:1 is allowed at 1000 W output to the antenna.

User-friendly and durable
An amplifier that is both user-friendly and that looks after itself.

  • Operator selectable class AB2 mode for best linearity or class B for minimal loss at the anode in continuous digital modes;
  • Operator selectable modes of full or 50% reduced power output with no decrease in efficiency;
  • Auto-controlled cooling airflow;
  • Continuous monitoring of parameters and tube protection;
  • Able to monitor 20 operator selectable amplifier parameters on the display;
  • Unique ACOM protection for the band's switch (BAND);
  • Original ACOM HF arc protection at the output, or at the antenna;
  • Original ACOM TRI prompt: bar indicator for quick and accurate setting of the actual load resistance at the tube anode when matched to the antenna;
  • Factory preset input lowpass filters for best linearity and input SWR less than 1.3 for any amateur radio band;

 

OLED comment display
Two-line OLED display peak bar indicator for the output power, 20 operational parameters and detailed text messages. All amplifier status indications are explained via detailed text displayed on the OLED display.

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

Less noise in the shack
HF antenna reed relay for a virtually no noise operation, QSK compatible CW operation.

Transceiver-independent
The amplifier operates without special signals from the transceiver - "Ground on TX" (PTT) and 80 W RF drive power are sufficient.

Single tube operation
Uses a single 3CX800A7 cermet triode in a grounded grid loop.

Tube protection
Continuous monitoring of parameters and tube protection.

Output RF arc protection
Original ACOM HF arc protection at the output, or at the antenna.

Power supply
Single phase mains power, 90-132 / 180-264 VAC at 50-60 Hz, power consumption at rated output – 2000 VA, cosϕ=0.8 @ 240 VAC. The amplifier power supply can be configured for 8 different nominal line voltages: 100, 110, 120, 200, 210, 220, 230, or 240 VAC.

Easy maintenance
Non-volatile memory with SIGNATURES of the most recent 8 Serious Fault Protection events.

 

 

Frequency Coverage

  • All amateur bands from 1.8 through 54 MHz:
    • 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 to 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.

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

  • No more than 34 dB IMD3 with regard to one of the two tones (40 dB with regard to PEP);

Electric hum and noise

  • No more than 40 dB at rated power;

Harmonic Emissions Output Suppression

  • 1.8-29.7 MHz - no less than 50 dB below rated power;
  • 50-54 MHz - no less than 70 dB below rated power;

Input and Output Impedances

  • 50 Ohm asymmetric, UHF coaxial connectors (SO-239A);
  • Input circuit: factory setup low-pass filters for a high level of linearity and input SWR no more than 3:1 in every HAM radio frequency band from 160 m to 6 m;
  • Bypass section SWR: No more than 1.1 continuously from 1.8 MHz to 54 MHz;
  • Range of matched output impedances: SWR to 3 at an arbitrary phase angle;

HF Gain

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

Mains Power Supply Voltage

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

Mains Power Consumption

  • 2000 VA at rated output, cosϕ=0.8 @ 240 VAC;

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: 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, 55.2 lbs.);

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.
 

Shipping:

We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.

Returns:

If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

Click here for returns form

Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]