Xiegu GNR-1 Digital Audio Noise Reduction Unit

Description

The Xiegu GNR-1 is an advanced digital audio noise filter and processor integrating digital noise reduction and filtering. It can be used to externally process audio from any shortwave receiver or transceiver to reduce background noise and improve signal intelligibility. The GNR-1 is powered by a 12 volt DC power pack (supplied) and has an internal amplifier capable of driving either headphones or an external speaker.

This unit is capable of reducing background noise by up to 20 dB and incorporates a low cut filter (5hz-1280 Hz) and a high cut filter (500hz -5.6 Khz). Input impedance can be selected from low (16 ohms) or high (10K ohms) to allow connection to either headphones or line output from any receiver.

Practical experience with this unit demonstrates a remarkable improvement of receiver performance when used with the Tecsun S-2000, Pl-660, Gospel GR-216, and other non DSP technology receivers. The unit can also be used with online SDRs to process the recovered audio.

Specifications:

Digital noise reduction more than 20dB

Digital filter frequency response range:
L-CUT adjustment range 5Hz-1280Hz
H-CUT adjustment range 500Hz-5615Hz

Headphone driving power 100mW@Max
Headphone output impedance 16~64Ω
Input impedance range Low impedance of 16Ω,
Speaker output power
high impedance of 10kΩ
≥3W (8Ω, THD≤0.2%)
Speaker output impedance 4~16Ω

Shipping dimensions: 250 (W) x 260 (D) x 29 (H)mm

Shipping weight: 1.2Kg