NSVA253 Apr. 2013 NewJRC SAW FILTER NSVA253 Application 1216.5MHz Low Power Transceiver Electrical Specification: (Table 1) The device characteristics are measured in the circuit shown in Fig.1. Table 1. Electrical Specifications Item Spec. Typ. Input and Output Impedance 50Ω - Nominal Center Frequency (f0) 1216.5MHz - Insertion Loss 1216~1217MHz 3.5dB max. 3.3dB Response Variation 1216~1217MHz 1.5dB max. 0.6dB Input and Output VSWR 1216~1217MHz 2.0 max. 1.8 Out of Band Re.