The 3TNF-1000/2000-N/N from K&L Microwave is a Tunable Filter with Frequency 1 to 2 GHz, Bandwidth 9 to 24 MHz, Rejection 40 dB @ 400 KHz, Input Power 50 W, Insertion Loss 0.5 dB. Tags: Benchtop, Mechanically Controlled. More details for 3TNF-1000/2000-N/N can be seen below.