The D5BT-750/1500-5-N/N-GRI from K&L Microwave is a Tunable Filter with Frequency 750 MHz to 1.5 GHz, Bandwidth 37.5 MHz, Input Power 50 W, Insertion Loss 1 dB, Supply Voltage 24 V. Tags: Benchtop, Digitally Controlled. More details for D5BT-750/1500-5-N/N-GRI can be seen below.