The RO3073 from Murata is a SAW Resonator with Frequency 314.925 to 315.075 MHz, Centre Frequency 315 MHz, Insertion Loss 1.5 to 2.2 dB, Capacitance 3.6 pF, Quality Factor Loaded 1100. Tags: Drop In, SAW Resonator. More details for RO3073 can be seen below.