The D3TNF-50/100-N/N-GRI from K&L Microwave is a Tunable Filter with Frequency 50 to 100 MHz, Bandwidth 3 to 6 MHz, Rejection 40 dB @ 300 KHz, Input Power 50 W, Insertion Loss 0.5 dB. Tags: Benchtop, Digitally Controlled. More details for D3TNF-50/100-N/N-GRI can be seen below.