The TR family of self-contained, forced air-cooled, broadband traveling wave tube microwave amplifiers includes five models: the 250TR1G2z5 that covers the 1 to 2.5 GHz (250 W) frequency range, the 300TR2z5G7z5 from 2.5 to 7.5 GHz (300 W), the 250TR7z5G18 from 7.5 to 18 GHz (250 W), the 300TR7z5G18 from 7.5 to 18 GHz (300 W), and the 200TR4G8 from 4 to 8 GHz (200 W). Standard features consist of a built-in IEEE 488 interface, 0-dBm input, VSWR protection, and gain control. The 19” rack-mountable units come with four carry handles and nonslip feet for benchtop use.