The D5TNF-1000/2000-1.4MHZ-N/N-GRI from K&L Microwave is a Tunable Filter with Frequency 1 to 2 GHz, Bandwidth 10.5 MHz, Rejection 40 dB @ 1.4 MHz, Insertion Loss 1 dB, Supply Voltage 28 V. Tags: Benchtop, Digitally Controlled. More details for D5TNF-1000/2000-1.4MHZ-N/N-GRI can be seen below.