Zaxcom QRX235 4-Channel ENG Receiver

Zaxcom QRX235 4-Channel ENG Receiver
 Zaxcom QRX235 4-Channel ENG ReceiverZaxcom QRX235 4-Channel ENG Receiver 

Zaxcom QRX235 4-Channel ENG Receiver

Frequency block 26 (662.0 to 692.0 / TV channels 46 to50)

  • Digital Modulation: 100% digital modulation for superior audio quality
  • Encrypted Audio: Keeps transmitted audio private
  • Intermodulation Resistant: Removes unwanted spurious emissions for a cleaner signal
  • Timecode: Built-in timecode reader and generator
  • Zaxnet: Provides wireless timecode, ZaxNet audio and remote control between Zaxcom products
  • Zaxnet Remote: Controls your wireless transmitters remotely

More Than Just Incredible Range

  • Full Confidence
    The QRX235 with QIFB gives you a total confidence loop, it receives audio and timecode then sends it right back.
  • Seeing is Believing
    Ultra bright multi-colored side mounted LED's gives you visual conformation that RF and audio are making it to the camera.

 QRX235 is successor to the QRX100 boasting significantly enhanced distance and range.

Three key components give QRX235 its enhanced distance / range:

  • New digital modulation
  • Enhanced receiver design giving it maximum sensitivity while lowering its noise floor
  • The elimination in any difference between single and dual mode

QRX235 receives up to 4 channels of 100% digital audio from up to 2 transmitters, any combination of mono and stereo transmitters is accepted.  The audio output can be either analog or AES.  It also features our patented side mounted LED’s, these provide visual confirmation of audio and RF reception. The LED’s are very bright and are visible with the QRX235 mounted in its Zaxcom camera mount even in bright sunlight.

The ZaxNet QIFB option is available in the QRX235 – The QIFB allows you to send or receive ZaxNet audio and timecode, as well as TRX commands from your QRX235.



Frequency Block Block 26 (662.0 to 692.0 / TV Channels 46-50)
Single Mode Receiver Type True diversity single conversion digital demodulator
Dual Mode Receiver Type Antenna diversity single conversion digital demodulator
RF Modulation proprietary digital method
RF Frequency Range 518.0 to 872.0 MHz (blocks are 20 to 36 MHz wide)
RF Frequency Step 100 KHz
RF Bandwidth 200 KHz
Channel Separation 500 KHz (700 KHz recommended)
Sensitivity -110 dBm
Antenna Connector 50-ohm SMA female

Receiver Audio – Analog Output (x 4)

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

Receiver Audio – Digital Output (x4)

Signal Format AES Balanced
Audio Output Connector TA-5M

IFB Transmitter (QIFB Option Only)

RF Power Output 50 mW
RF Modulation Digital Spread Spectrum
RF Frequency Range 2.403 to 2.475 GHz
RF Frequency Step 0.001 GHz (1 MHz)
RF Bandwidth 1 MHz
Channel Separation 2 MHz
Antenna Connector 50-ohm SMA Female
Emission Designator 180 KV2E
FCC Part CFR Title 47, Part 18IFB

2.4 GHz Audio Transmitter (QIFB Option Only)

Dynamic Range 103 dB
Distortion 0.01%
Frequency Response 20 Hz to 12 kHz
System Group Delay 10 ms

IFB Audio Input (QIFB Option Only)

Connector Stereo 1/8″ (3.5 mm)
Type Balanced / Unbalanced
Level -10 dBu
Impedance 10 k Ω
ADC Bit-depth 24 bits
ADC Sampling Rate 48 kHz

Timecode Input (QIFB Option Only)

Connector Stereo 1/8″ (3.5 mm)
Level Range 1 to 5V, P-P
Impedance 10 k Ω

Timecode Output (QIFB Option Only)

Connector Stereo 1/8″ (3.5 mm)
Level Range .2 to 5V, P-P
Impedance 8 Ω

Timecode Reader / Generator (QIFB Option Only)

Clock Accuracy 1.54 PPM (1 frame out in 6 hours)
Timecode Type SMPTE
Timecode Frame Rates 23.98, 24, 25, 29.97NDF, 29.97DF, 30NDF, 30DF


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 LCD Panel
All specifications subject to change without notice. Zaxcom Digital Wireless is protected under patent #’s: 7,711,443, 7,929,902 & D608,339

Delivery Services

At Pinknoise Systems we like to offer our customers a wide choice of delivery options for their orders, and our prices are affordable and competitive. We also use only the best, most reliable couriers and delivery services to get your equipment where it needs to be - quickly and securely. Please find an outline of our services, prices and timescales below.

Delivery Times

Delivery times are based on when the package(s) leaves our premises. Sometimes, due to stock restrictions or a non-completed order, delivery may take longer as there is a delay with couriers, which is unfortunately out of our hands. If your order is urgent, or details change, please do let us know.
For full details, fees, and time schedules, please see our Delivery Information page.

Returns & Refunds

New items: You can return goods you have ordered from us for any reason, at any time within 30 working days of receipt (14 to initiate the process), for a full refund or for an exchange for a different product from our range. Items must be packed suitably and insured for full loss in the event of a delivery problem. Pinknoise Systems will not be responsible for lost or damaged return goods. Lost or damaged goods may affect the level of refund you receive. For full details of our returns policy, please click here.

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£2,319.00 £2,322.46
Saving Of:  £3.46 (0%)
(£1,932.50 Exc. VAT)
Delivery hours
UK ORDERS: Order soon for delivery on using our express service

Model:  ZAX-QRX-235
Part No.:  QRX235
Manufacturer:  Zaxcom

Contact us for advice

Need advice? Give us a call

(+44) 01453
825 802

International Delivery

International delivery

We ship across Europe and around the world and have a multitude of shipping options available to our international customers during the checkout, including express delivery for urgent orders.


We have a next day shipping option available for the UK with our DPD courier service, which features delivery alerts, personal delivery preferences and driver tracking with the DPD mobile app.


Spread the cost to maximise your capital. Just call our helpful sales team on 01453 825 802, from 9.00am - 5.00pm, to discuss these options and find out what's available to you.

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Zaxcom QRX235 4-Channel ENG Receiver

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