is an antenna matching device designed to match the output of a 25 W transmitter with a 2.7 m high pin antenna in the KV range (1600...30000 kHz). ATU-25 provides transformation of the input impedance of the antenna into an active impedance of 50 Ohm with VSWR less than 1.5. ATU-25 is made in the form of a single board for installation in the radio station.
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