ACOM 500S Solid State 160-4 m Linear Amplifier

The ACOM 500S is a state-of-the art linear power 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.

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.

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.

All amplifier status indications are explained via detailed text displayed on the 5" high-resolution color display (108x65 mm, 800x480 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.

The ACOM 500S amplifier uses a rugged LDMOS transistor.

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

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

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

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 extended mains voltage range of 100-240 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.

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.

Specification

• Frequency Coverage: All amateur bands from 1.8 through 70.5 MHz
• Rated Output Power: 500 W ±0.5 dB, PEP or digital
• Intermodulation Distortion (IMD3): Better than 30 dB below rated PEP
• Harmonic and Parasitic Emissions Output Suppression: Below 30 MHz - better than 50 dBc below rated output; Above 30 MHz - better than 70 dBc below rated output
• Input Impedances: Nominal value: 50 Ohm unbalanced, UHF (SO-239A) type connectors; SWR: Below 1.5 (1.2 typically), 1.8-70.5 MHz continuous range; RF bypass: SWR - below 1.1, 1.8-70.5 MHz
• Antenna Impedance: 50 Ohm unbalanced
• Two antenna outputs available as below:
• RF OUTPUT 1 output has to be used for direct connection to ACOM antenna tuners 04AT or 06AT only. ACOM antenna tuners 04AT and 06AT support antennas within 160 to 6 meter bands
• RF OUTPUT 2 output has to be used for direct connection to antenna or to non ACOM antenna tuner. A well-matched antenna with an SWR below 1.5 can be connected to this output for any band. While low SWR is good for any band, it is extremely important on 6 and 4m
• Antenna connectors: PTFE UHF (SO-239A) type
• RF Power Gain: 11.7 dB ±1.5 dB (typically 35 W drive for rated output)
• Mains Power Supply Voltage: 100-240 VAC ±10%, 50-60 Hz, Single phase
• Mains Power Consumption at Rated Output Power: Up to 1000 VA
• Power factor at rated output: 0.95 or higher
• Mains Power Consumption in Low Energy (Waiting) Mode: Less than 1 VA
• Complies with CE safety and electromagnetic compatibility requirements, as well as with the US Federal Communications Commission (FCC) regulations
• Dimensions: W-291 x D-270 x H-157mm
• Weight: 7.8kg
• Temperature range: -10 to +40 degrees Celsius
• Relative air humidity: up to 95% @ +35 degrees Celsius