Suitable for both commercial and defense applications, the Model 4923 and 4925 circulators cover 2 GHz to 4 GHz and 7 GHz to 12 GHz, respectively. The Model 4923 specifies an isolation of 18 dB, insertion loss of 0.5 dB, and a maximum VSWR of 1.3:1. It handles RF input power up to 50W peak and 25 W average and operates over a temperature range of 0°C to +55°C. The Model 4925 has an isolation of 20 dB, insertion loss of 0.4 dB, VSWR of 1.25:1, peak RF power handling ability of 25W, and an average power of 10W. It operates over a temperature range of 0°C to +65°C. Both models use SMA female connectors. NARDA MICROWAVE - EAST, Hauppauge, NY. (631) 231-1700.