2
SPECIFICATIONS
Operating Voltage
12-18 VDC
Operating Current
3.8 mA
Operating Temperature
-30 - +60 C
Input Level
20 mV – 1 V RMS
Input Impedance
600 Ohms
Frequency Range
NFBF-10A
1200-2600 Hz
NFBF-10B
700-3000 Hz
NFBF-10C
80-200 Hz
Band Width
0.5%
Device Gain or Loss
Unity
Notch Filter Depth
30 dB
Audio Output Impedance
600 Ohms
Dimensions
3.6” L X 2.25” W X 1.52” H
GENERAL INFORMATION
Notch Filter:
As a notch filter, the NFBF-10 will remove the undesirable tone from the incoming audio while
passing the rest of the audio. The NFBF-10A is often used to remove 2175 Hz keying tone from tone remote
systems going into a voice recorder. The NFBF-10C is used to remove CTCSS tones from audio.
Band-Pass Filter:
As a band-pass filter, the NFBF-10 will block all audio except for the desired frequency.
