The ACTR520/423.22/QCC8C from Advanced Crystal Technology is a SAW Resonator with Frequency 423.145 to 423.295 MHz, Centre Frequency 423.22 MHz, Insertion Loss 1.6 to 2.2 dB, Capacitance 1.8 to 2.4 pF, Quality Factor Loaded 1750. Tags: Surface Mount, SAW Resonator. More details for ACTR520/423.22/QCC8C can be seen below.