ACOM 500S | Solid-State 160-4 m Linear Amplifier–NEW !


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ACOM 500S | Solid-State 160-4 m Linear Amplifier

The ACOM 500S is a state-of-the-art linear power amplifier that covers all amateur bands from 1.8 through 70.5 MHz and provides 500 W rated output power (PEP or digital). The amplifier operating information is shown on a multi-functional, high-resolution color display. ACOM 500S can be controlled either by the six front-panel buttons or remotely.

Easy to operate
The overall operation of ACOM 500S 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 available on the market – does not need any special signals: “ground on transmit” and less than 25 W of RF drive power is sufficient.

LDMOS transistor technology
The ACOM 500S amplifier uses a rugged LDMOS transistor.

Broadband input circuit
Broadband input circuit, providing transceiver load with SWR below 1.5 without retuning throughout the whole frequency range from 1.8 to 70.5 MHz.

Takes care of itself via continuously working protection circuits in all modes.

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

Easy maintenance
Detailed data about each of the last hard-fault protection trips is stored in the amplifier’s non-volatile memory.

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). SMPS operates with an extended mains voltage range of 100-240 VAC, with no internal switchover. 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 built-in radio-frequency filters.


Additional information

Weight8.0 kg

a) Rated output power: 700W +/-0.5dB, PEP or continuous carrier.

b) Intermodulation distortions (IMD3): better than 31dB 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: 14dB +/-1dB;

f) Mains power supply voltage: 100V-240V without switching;

g) Mains power consumption at full output power:1350VA 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: (W x H x D) 326 x 143 x 365 mm (12,8 x 5,6 x 14,2 In); 11.8 kg (26 Lbs).

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