Quantic PMI Model 4SFB-0R5G4R5G-SFF is a 4-Channel switched filter bank that operates over the frequency range of 0.5 to 4.5 GHz that has a maximum insertion loss of 5 dB and a minimum isolation of 60 dB. Package size is 3.6" x 2.0" x 0.5" with SMA female connectors.