The ACTQ434/433.92/TO39 from Advanced Crystal Technology is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 6 to 8 dB, Capacitance 1.6 to 2.2 pF, Quality Factor Loaded 6500. Tags: Drop In, SAW Resonator. More details for ACTQ434/433.92/TO39 can be seen below.