Zaxcom QRX300 ZHD48 Receiver
The Zaxcom QRX300 ZHD48 Receiver 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 concern. This 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.
100% digital modulation for superior audio quality
keeps transmitted audio private
ZHD is Zaxcom’s High Density modulation mode that will allow up to ten channels of wireless to be operated in just one MHz of spectrum space. ZHD is standard in the ZMT3, TRXLT3, TRXLA3, TRXFB3 and TRX743.
• A single 6 MHz American television channel can contain up to sixty channels of ZHD wireless when used with a QRX300 receiver spaced 100 kHz
• The wireless signal is only 48 KHz wide and frequencies can be spaced as close as 100 kHz apart
• RF transmitter power is adjustable up to 100 mW on TRXLA3 & TRX743
• Incredible transmission distance due to ZHD’s highly efficient modulation
• Transmitters are available as 3.5 (518 – 614 MHz) and 3.6 (596 – 698 MHz)
TRXLT3, TRXLA3, ZMT3, TRXFB3 and TRX743 transmitters are capable of running either ZHD modulation or any existing mono modulations so they maintain compatibility with all Zaxcom receivers. ZHD modulation mode conforms to all currently proposed FCC regulations for spectrally efficient wireless transmission.
ZHD96 modulation works in single or dual mode on all current QRX200 series receivers.
ZHD48 modulation works in single mode only with the QRX300 receiver.
ZHD modulation with QRX300 – 10 frequencies per MHz – 60 per TV channel
ZHD modulation with QRX200, QRX235, RX200, QRX212 – 5 frequencies per MHz – 30 per TV channel
Current XR modulation with QRX200, QRX235, RX200, QRX212 – roughly 2.5 per MHz – 15 per TV channel