Manufacturer Model
Bruel & Kjaer 1621 Tuneable Band Pass Filter 0.2 Hz - 20 kHz
Tuneable Band Pass Filter
Bruel & Kjaer 1624 Tunable Band Pass Filter
Octave Filter Set
Krohn-Hite 3100 Variable-Band Pass Filter
10Hz-1MHz BP Filter
Krohn-Hite 3202 Variable Filter
20Hz-20MHz HP, LP, BP, BR Tunable Filter
3323 Krohn-Hite Variable Filter
0.01Hz-100kHz HP, LP, BP, BR Tunable Filter
Krohn-Hite 3364 4 Ch. Butterworth/Bessel Filter
0.1Hz-200kHz, 4 Channel Butterworth/Bessel Filter
Krohn-Hite 3550 Variable Filter
2Hz-200kHz HP, LP, BP, BR Tunable Filter
Krohn-Hite 3905B Programmable Filter
0.01Hz to 25.6MHz IEEE-488 Programmable Filter
Krohn-Hite 3940 Dual Channel Filter, 3 Hz - 2 MHz
3Hz to 2MHz Tunable Active Filter
Wavetek 716 16 Channel Brickwall Filter
100Hz-100kHz 16ch., 115dB/Oct Brick Wall Filter
Wavetek 852 Dual HI/LO Variable Analog Filter , single-ended
50Hz-500Hz 2ch. Dual Hi/Low Filter