What frequency range is covered by each of the two tunable filters?
Each filter has 16 discrete steps within the frequency range appropriate to the particular NSII model being used. There is a rotary knob that has clicked detents at each of the 16 positions. For example, the 16 steps for Model NSII are: 0.25 MHz between 1.5 and 3 MHz; 0.33 MHz between 3 and 4 MHz; and, 0.5 MHz between 4 and 7 MHz.
