The ACTR423.22/423.22/F11 from Advanced Crystal Technology is a SAW Resonator with Frequency 423.145 to 423.295 MHz, Centre Frequency 423.22 MHz, Insertion Loss 1.5 to 2 dB, Capacitance 1.65 to 2.25 pF, Quality Factor Loaded 1850. Tags: Drop In, SAW Resonator. More details for ACTR423.22/423.22/F11 can be seen below.