The PE8736 from Pasternack Enterprises Inc is a Tunable Filter with Frequency 250 to 500 MHz, Bandwidth 2.5 MHz, Rejection 40 dB @ 300 KHz, Input Power 50 W, Operating Temperature -55 to 85 Degree C. Tags: Benchtop, Module with Connectors, Mechanically Controlled. More details for PE8736 can be seen below.