Acom 500S hf amplifier 500 w from 160 to 4 m transtistor

Acom 500S hf amplifier 500 w from 160 to 4 m transtistor This power amplifier is characterized by robustness, ease of use and a weight of only 7.8 kg.

This also makes it suitable for DX expeditions and portable use. The output power is max. 500W on all bands (160m to 4m, 1.8 - 70.5 MHz); the power is available in all operating modes and without restrictions. The transmit power is generated by a very high-quality LDMOS transistor, which can survive even a mismatch.

If the output stage is connected to the CAT interface of the transceiver, the operating frequency is automatically monitored and, if necessary, the band is changed automatically. But even without a CAT cable, thanks to the built-in frequency counter, the unit is able to determine the operating frequency and change bands if necessary. An input power of 20 watts is sufficient to achieve full output power. The input circuit is designed with a very wide bandwidth to provide the transceiver with an optimal SWR of 1:1.5 (typically 1:2.1) on all bands.

Numerous safety measures ensure interference-free operation. 

The large color LC display always shows all important data: Output power, reflected power, PA temperature, band and much more. The unit is operated via a clear menu system with the six buttons below the display. A CAT/AUX interface is used for optional communication with the transceiver. All transceiver types and most common protocols are supported. The power amplifier can also be controlled via a serial interface (RS-232).

Acom installs a power supply in the 500S that can operate from 100V to 240V. Inrush current is automatically limited and the power supply offers excellent power factor correction (PFC). Together with automatic adaptation to the input voltage, reliable operation is therefore possible even in the presence of generators, fluctuating supply voltages, etc.

The ACOM-500S does not have a built-in auto tuner. Up to an SWR of approximately 2:1 the PA operates without limitations, up to an SWR of 3:1 the PA reduces power, beyond this threshold it switches off with a fault signal.

Electromagnetic compatibility naturally complies with CE requirements and FCC regulations.Perfect compatibility - both with highly sensitive equipment and with other devices in the shack (receivers, computers, other amplifiers) - is ensured thanks to the PFC used and the integrated high frequency filters.