JPS NTR-1
Audio Filter

Discontinued!

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The JPS NTR-1 is a general purpose audio processing unit designed specifically to provide noise reduction and multiple tone removal for AM/FM reception, narrow band operation for SSB, CW, or data reception at an affordable cost. The unit uses Digital Signal Processing (DSP) to provide operating characteristics far superior to those attainable using analog techniques. Four push-buttons are provided on the front panel to make the operation of the unit as simple and user-friendly as possible. All functions are independent and may be used separately or together, as desired. It takes the audio from the receiver, converts it into a digital data bit stream, processes it, turns it back into an analog signal, and feeds it to an external 3 to 8 ohm speaker. All of this is done in "real time", so there is virtually no delay between input audio and output audio.