Model 2A4NEX is a hermetic high-power microwave isolator designed for use in space applications from 2.2 to 2.3 GHz. It can handle 75 W continuous-wave (CW) power and 100 W peak power is a compact housing measuring just 0.80 x 0.80 x 0.38 in. The isolator achieves typical insertion loss of just 0.6 dB while delivering isolation of 20 dB or better. It includes hermetic field-removable SMA connectors while all joints are either glass-to-metal or metal-to-metal seals. The isolator, which exhibits VSWR of 1.25:1, can handle operating temperatures from -35 to +70°C. Renaissance Electronics Corp., 12 Lancaster County Rd., Harvard, MA 01451; (978) 772-7774, e-mail:,