The Model 5591 from Netcom is a Tunable Filter with Frequency 400 to 600 MHz, Bandwidth 12 to 16 MHz, Input Power 1 W, Peak Power 2 W, Insertion Loss 2.8 to 3.5 dB. Tags: Drop-In (Thru-Hole), Digitally Controlled. More details for Model 5591 can be seen below.