Tunable Notch Filter and Band-Pass Filter (80-200 Hz)
This product comes complete in a box with 600 ohm balancing transformers and a wall power adaptor. The product has an RJ-11 input (source audio) and an RJ-11 output (destination audio) with the middle pair being used for 2-wire audio.
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Item SKU Number: 512315
Manufacturer Part Number: NFBF10C, NFBF 10C, NFBF-10C
Midian Electronics NFBF-10 600 OHM Balanced Line Audio Amplifier with Tunable Notch Filter / Bandpass Filter / Low-High Pass Filter with AGC
Midian's NFBF-10 is a single channel 600 ohm balanced line audio amplifier with a tunable notch filter and AGC as well as an adjustable gain output stage. It can be used in several ways. It may serve as a simple single channel line audio amplifier, an AGC amplifier, a tunable notch filter, or a combination of these functions. It's most common use it to remove the 2175 Hz tone remote keying tone from voice recording systems and 1950 Hz Pilot Tone from voting systems. A high pass, low pass, bandpass filter can be effected through the use of jumpers.
Applications
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 commonly used to remove 2175 Hz keying tone from tone remote radio dispatch 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.
High Pass / Low Pass Filter: Through the use of jumpers, a high pass or low pass filter can be created by eliminating the bandpass or notch filters.
600 OHM Balanced Line Audio Amplifier: Has an adjustable input gain control and an adjustable output gain control.
AGC Amplifier: Has a jumper selectable AGC Amp that can be installed between the input and the line driver amplifier.
Features:
- Band pass filter passes desired tone while rejecting all others
- Notch filter removes annoying tones from receiver audio
- Option A: Tunes from 1200 - 2600 Hz
- Option B: Tunes from 700 - 3000 Hz
- Option C: Tunes from 80 - 200 Hz
- 3 year warranty
This product comes complete in a box with 600 ohm balancing transformers and a wall power adaptor. The product has an RJ-11 input (source audio) and an RJ-11 output (destination audio) with the middle pair being used for 2-wire audio.
Midian Electronics manufactures voice encryption and tone signaling devices for Two-Way radio for use by Public Safety users. Products include plug-in scramblers for radios such as Motorola, Vertex, Maxon, Tait, & Icom, Two-Tone & DTMF encoders and decoders for emergency alarms, and products compatible with Motorola's MDC-1200 signaling format.
Midian's tone signaling and encryption products fit a wide variety of applications. They are used by public safety (police, fire, and ambulance), fleet (taxi, towing, fishing, etc.), government, industrial, and OEM users.
Midian's products have been used by: United States Armed Forces, Indian Army, Mexico City Federal Police, Riyadh Police Force, Spanish Guardia Civil, and many others.
Cadex charger battery adapter. To be used with batteries made forNLN4462 battery (NiCd, 14.4 V@250mAh), used with Motorola Comm HT220, MT500, MT700 radios.
