The PE8733 from Pasternack Enterprises Inc is a Tunable Filter with Frequency 1.5 to 3 GHz, Bandwidth 75 MHz, Input Power 50 W, Insertion Loss 1 dB, Operating Temperature -55 to 85 Degree C. Tags: Benchtop, Module with Connectors, Mechanically Controlled. More details for PE8733 can be seen below.