The Model KAW3020 is a Class A wideband RF power amplifier system that delivers greater than 250 Watts CW power into a 50-Ohm load over the frequency range of 20 MHz to 1000 MHz. Power gain is a minimum of 54 dB. GPIB control requires the optional IEEE488.2/RS232 Interface Controller Module. The system features forward and reflected power indication on a front panel-mounted, analog meter; Automatic Level Control (ALC); RF gain control; overdrive protection; full VSWR protection; input blanking, and over-temperature protection. On the basic model these features and remote power on/off control can be accessed for hard-wire remote operation through a 25-pin, d-subminiature connector. For a detailed description of these features refer to “SPECIAL FEATURES – KAA & KAW-SERIES SINGLE BAND RF POWER AMPLIFIERS”. The system comprises an Amplifier Unit and a Power Controller/Supply Unit. These are installed on telescoping slides into a standard 19-inch equipment rack, 22 inches wide, 23 inches high, and 38 inches deep. The equipment rack is fitted with heavy-duty swivel casters. Each system component has integral forced-air cooling provided by highly reliable, impeller and/or tube-axial fans. The Model KAW3020 uses switching-type power supply modules and operates from 187-265 VAC, 47-63 Hz line. Power consumption is 3.0 kVA. The system may be placed in 'stand-by' mode with the BLANKING switch