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Coaxial High-Power Amplifier

Coaxial High-Power Amplifier
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Model ZHL-20W-52-S is a coaxial high-power amplifier capable of 20W output power from 70 to 500 MHz. As well suited for amateur radios as for military communications systems, it maintains typical gain of 50 dB with gain flatness within +/-0.7 dB across the full frequency range. Based on silicon LDMOS power transistors, the rugged 50 ohm Class A amplifier is unconditionally stable with any kind of signal modulation, using patented technology to maintain constant current consumption (4A at 24Vdc), and incorporating multiple protection circuits, including over-voltage and over-temperature protection (which shuts off the unit when the base plate temperature exceeds +100ºC). It is also reverse polarity protected and will not suffer damage with an open- or short-circuit output load under full CW output power operation. It has a typical noise figure of 7 dB and measures just 9.85 x 7.3 x 6.3” with SMA input and output connectors. The amplifier is designed for an operating temperature range of 0 to +65ºC when used with the company’s heatsink and fan.

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