The QRX300 is a special order receiver dedicated to receive a single channel of ZHD48 modulation.
The receiver has very narrow filters that allow for a 50 KHz wide signal to be received with a channel spacing as close as 100 KHz.

The QRX300 is designed specifically for applications where limited spectrum bandwidth is available and a large number of wireless microphones need to be used together and a latency of 18 milliseconds is not a concernThis unit can only receive ZHD48 modulation. It is not compatible with XR, US Mono or ZHD96.

The QRX300 is 200 MHz wide. A tunable tracking front end filter is featured in the QRX300 so you can receive any frequency in any block from 20 through 27 or 512 – 698 MHz while still filtering out unwanted RF.

Receives one channel of 100% digital audio. The QRX300 outputs audio as an analog signal or as an AES digital signal.


    • Single Mode Receiver Type: True diversity single conversion digital demodulator
    • RF Modulation: proprietary digital method
    • RF Frequency Range: 512 to 698 MHz
    • RF Frequency Step: 100 KHz
    • RF Bandwidth: 50 KHz
    • Channel Separation: 100 KHz (200 KHz recommended)
    • Sensitivity: -110 dBm
    • Antenna Connector: 50-ohm SMA female
    • Dynamic Range: 114 dB
    • Distortion: 0.001%
    • DAC Bit-depth: 24 bits
    • Connector: TA-5M
    • Audio Output Level: Line: -10 to 0 dBm active balanced
    • Signal Format: AES Balanced
    • Audio Output Connector: TA-5M
  • MISC.
    • Weight: 6.0 oz (170 grams)
    • Dimensions: 1.25″ x 3.25″ x 5.25″ (32mm x 83mm x 133mm)
    • External Power: 9 to 18 VDC (300mA @ 12VDC)
    • Internal Power: N/A
    • Display: Graphic OLED Display