The ACTR433T/433.92/TO39-1.1 from Advanced Crystal Technology is a SAW Resonator with Frequency 433.845 to 433.995 MHz, Centre Frequency 433.92 MHz, Insertion Loss 1.1 to 1.6 dB, Capacitance 2.25 to 2.85 pF, Quality Factor Loaded 1200. Tags: Drop In, SAW Resonator. More details for ACTR433T/433.92/TO39-1.1 can be seen below.