The ACTR4111/311.0/QCC8C from Advanced Crystal Technology is a SAW Resonator with Frequency 310.925 to 311.075 MHz, Centre Frequency 311 MHz, Insertion Loss 1.5 to 2.2 dB, Capacitance 2.5 to 3.1 pF, Quality Factor Loaded 1700. Tags: Surface Mount, SAW Resonator. More details for ACTR4111/311.0/QCC8C can be seen below.