The 3TNF-30/76-N/N from K&L Microwave is a Tunable Filter with Frequency 30 to 76 MHz, Bandwidth 1 to 2.5 MHz, Rejection 40 dB @ 100 KHz, Input Power 50 W, Insertion Loss 0.5 dB. Tags: Benchtop, Mechanically Controlled. More details for 3TNF-30/76-N/N can be seen below.