The RSR-83.00-80-B from Raltron is a SAW Resonator with Frequency 77.24 MHz (5 Channel) / 83.24 MHz (6 Channel), Centre Frequency 80.24 MHz, Insertion Loss 4 dB (Resonant Loss), Capacitance 4.2 to 4.5 pF, Operating Temperature -10 to 60 Degree C. Tags: Drop In, SAW Resonator. More details for RSR-83.00-80-B can be seen below.