The ACTR390T/390.0/F11 from Advanced Crystal Technology is a SAW Resonator with Frequency 389.85 to 390.15 MHz, Centre Frequency 390 MHz, Insertion Loss 1.4 to 2 dB, Capacitance 2.7 to 3.3 pF, Quality Factor Loaded 1100. Tags: Drop In, SAW Resonator. More details for ACTR390T/390.0/F11 can be seen below.