The ACTR433S/433.92/TO39-1.3 from Advanced Crystal Technology is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.3 to 1.8 dB, Capacitance 2.65 to 3.25 pF, Quality Factor Loaded 1650. Tags: Drop In, SAW Resonator. More details for ACTR433S/433.92/TO39-1.3 can be seen below.