Usage
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 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, 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).

Transceiver-independent
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
Тhe 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.

Intelligence
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
Controlled remotely via the Internet by the ACOM eBox Ethernet Remote Control device (optional equipment) and through an RS-232 port.

​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 from 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) exceeding the standard EMC requirements due to the used PFC and built-in radio-frequency filters.

Documentation
The User’s Manual is available as a PDF file only. The latest version of the User’s Manual is available under the Download tab (see above).