ACOM A1200S HF 1.8-54 incl. 5 Mhz. Amplifier Solid State NEW–Demo in stock


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  • ACOM 1200S User Manual En 08_2021
  • The ACOM 1200S is a state-of-the-art linear power amplifier that covers all amateur bands from 1.8 through 54 MHz and provides 1000 W output power (PEP or continuous carrier) with less than 50 W of the drive. The amplifier operating information is shown on a multi-functional, high-resolution color display.

    Easy to operate
    The overall operation of ACOM 1200S is extremely simplified: the screen menus are intuitive and easy to follow, and no special skill is required from the operator when changing frequency bands.

    User-friendly automatic control
    When connected to a transceiver with CAT capability, the amplifier will track the operating frequency and will change bands accordingly. Even if not CAT connected, the amplifier monitors the input signal frequency through the built-in frequency counter and automatically switches bands.

    High-resolution color display
    All amplifier status indications are explained via detailed text displayed on the 5″ high-resolution color display (108×65 mm, 800×480 pixels, and 24-bit color).

    Compatible with all transceiver models – does not need any special signals: “ground on transmit” and less than 50 W of RF drive power is sufficient.

    LDMOS transistor technology
    The final PA stage uses a rugged LDMOS transistor – BLF188XR or equivalent.

    Broadband input circuit
    Broadband input circuit, providing a perfect transceiver load with SWR below 1.2 (typically 1.1), without retuning throughout the whole frequency range from 1.8 to 54 MHz.

    Takes care of itself during operation via continuously working protection circuits in all modes. The operator can monitor more than 10 parameters of the amplifier in operation.

    Easy maintenance
    Detailed data (55 parameters) about each of the last 28 hard-fault protection trips is stored in the amplifier’s memory.

    Remote control capabilities
    Remotely controlled by RS-232 port and via the Internet by the ACOM eBox Ethernet Remote Control device.

    Compact and lightweight construction
    Convenient for expeditions and field operation due to the extremely compact and lightweight construction and the built-in switching-mode power supply (SMPS) that operates with extended mains voltage range of 100-240 VAC (output power reduced to about 500 W PEP below 200 VAC), with no internal switch over. The consumed current is purely sinusoidal, Power Factor Corrected (PFC) and inrush limited. This makes the operation of unstable mains and generators easy and trouble-free.

    Electromagnetic compatibility
    Perfect electromagnetic compatibility (EMC) with both highly sensitive devices and the powerful devices in the radio station (receivers, computers, other amplifiers) exceeds the standard EMC requirements due to the use of PFC and built-in radio-frequency filters.

    Links to the Manual & Accessories below

Additional information

Weight14.5 kg

a) Rated output power: 1000W +/-0.5dB, PEP or continuous carrier (1200W typically).

b) Intermodulation distortions (IMD3): better than 30dB below the rated PEP output.

c) Harmonic and parasitic emissions output suppression: better than 60dB (65dB typically).

d) Input and output impedances: nominal value: 50 Ohm unbalanced, UHF (SO239) type connectors;

• input circuit: broadband, SWR below 1.2:1 (1.1:1 typically); 1.8 – 54 MHz continuous range without retuning or switching;

• RF by-pass path SWR – below 1.1:1, 1.8-54 MHz;

• admissible SWR at the output load (the antenna): up to 3:1 with proportional power reduction and up to 1.5:1 for full output power;

e) RF power gain: 13dB +/-1dB;

f) Mains power supply voltage: 93Vч265V without switching;

g) Mains power consumption at full output power:2000VA or less with a power factor of 0.95 or higher;

h) Mains power consumption in Low Energy (waiting) mode: less than 1VA;

i) Complies with EU safety regulations and electromagnetic compatibility standards, as well as with the US Federal Communications Commission (FCC) rules;

j) Environment working conditions:

• temperature range: -10 C to +40 C (14 F to 104 F);

• relative air humidity: up to 95% @ 35 C (95 F);

k) Dimensions (projections not included) and weight, operating: (D x W x H) 418 x 372 x 162 mm (16,46 x 14,65 x 6,38 In); 14.5 kg (31.97 Lbs).



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