The MP04097 from Golledge is a SAW Resonator with Frequency 309.925 to 310.075 MHz, Centre Frequency 310.01 MHz, Insertion Loss 1.7 to 2.5 dB, Voltage 12 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount, SAW Resonator. More details for MP04097 can be seen below.