The QBS-617 is a Class “A” LDMOS Amplifier that operates from 1930 MHz to 1990 MHz. This amplifier provides an output peak power of 150 watts with a gain of 50 dB. It requires a 28 V supply and draws 8 Amps of current. This design has an isolator protected output to guard against transistor failure due to infinite VSWR mismatch. In addition API has incorporated an array of control and monitoring features including amplifier enable, high temperature alarm, thermal shutdown, forward / reverse power monitoring and temperature monitoring. This LDMOS amplifier is packaged in an aluminum chassis for heat dissipation and protection from harsh environmental conditions.