The ACTR3006/310.0/QCC4A from Advanced Crystal Technology is a SAW Resonator with Frequency 309.925 to 310.075 MHz, Centre Frequency 310 MHz, Insertion Loss 1.1 to 1.8 dB, Capacitance 2.4 to 3 pF, Quality Factor Loaded 1800. Tags: Surface Mount, SAW Resonator. More details for ACTR3006/310.0/QCC4A can be seen below.