VidaRF offers 5.00-6.00 GHz Coaxial Circulator Model; VCC-5060-1 which has a rugged 2 piece body with S/Steel SMA connectors, sealed and painted black. Isolation 23 dB min, insertion loss of 0.40dB or less, VSWR of 1.15:1, temp -54 to +85C. View Datasheet