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[4th Gen] Single Channel Digital UHF Wireless Receiver [Rack Mounted]
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[4th Gen] Single Channel Digital UHF Wireless Receiver [Rack Mounted]

Based on the DT220 TECH platform. Can be used for conferences, stage-level sound pickup and forwarding and sound measurement scenarios.





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Product

Based on the DT220 TECH platform. Can be used for conferences, stage-level sound pickup and forwarding and sound measurement scenarios.





 Digital Audio UHF Wireless System 

  DTR228-1R

  Single Channel Digital UHF Wireless Receiver 

  [Flagship Edition]

  

 

  *GAODIMIC®  Products of the same brand and model are consistent with this product.

   

       4th Generation Tech Platform


Application Scenarios


1. In large-scale performance sound projects, replace the cable of wired microphone;

2. Used for pickup and forwarding of various sound sources (instruments, harmony, chorus) on stage;

3. Connect the sound field test (audio analysis software such as SMAART LIVE, SYSTUNED, etc.); complete the sound field measurement.

Characteristic


. Digital audio UHF wireless technology

. Signal-to-noise ratio>123dB, domestic top indicator

. 500MHz and 600MHz dual-band

. Noise floor voltage = 6mV, monitoring level noise floor control

. True diversity

. PI/4 DQPSK modulation

. Wireless transmission frequency response 20Hz~20KHz.

. Within the 20~20KHz frequency band, attenuation <2dB.

. Within the 20~20KHz frequency band, phase deviation 30°~60°.

. Transmission distance>100M.

. Delay 4.17ms

. Signal-to-noise ratio>123dB (with AP device detection screenshot)

. TFT color screen, rich functions

. Support external antenna power supply


Parameters


Communication Parameters

Freq. Band

510~590MHz，668~698MHz


Modulation Mode

Pi/4 DQPSK


Transmission Distance

>100 m (Related to wireless environment）


Transmission Concurrency

36 simultaneous transmissions


S/N>123dB

Freq. Response

20Hz-20KHz


Transmission Delay

4.17ms


Distortion T.H.D

<0.03% （@1KHz）


Sound Parameters

Mic TypeSuppor Earphones or Collar microphones

Sensitivity

-

Freq. Response-

Output Impedance

-

Directivity

-

Physical and Electrical Indicators

Power Supply

18650 lithium battery (3.7V)*2


Power Interface

USB - C


Endurance

＞20h


Size

35mm *100mm * 142mm ( without antenna) / 322g


Launch Connector

Cannon Interface


Function

Power, external antenna, wireless channel scanning


Questions Frequently Asked 


1. When multiple devices are used simultaneously, improper frequency setting can easily lead to performance degradation due to intermodulation interference.


Notes


  1. This model of product is recommended to be used in conjunction with iweex ® Unpredictable ® Brand, same technology platform, model DTR22X ("X" is any number) receiver device.

  2. Please use a legitimate and qualified product battery! Fake and inferior batteries may cause leakage or even explosions. If any abnormalities are found in the battery, please stop the equipment immediately and replace it to avoid the risk of explosion or equipment damage!


Documents


1_Manual_CNEN_GAODIMIC (DT228)_Digital UHF Wireless System (ALL)_20250710


23_Digital UHF Wireless System  Comparison_241023


Lastest Firmware Refereced


Released Date 2025.4.11

Firmware_GAODIMIC_DTR228-R (Rack Mouted Receiver) SR2_V104_20250411.bin




The device supports OTA upgrade, and please rerfer to the OTA upgrade guide. 

It is recommended to upgrade under guidance, or return to the manufacturer for upgrade, or have the upgrade performed by a designated repair shop.

Please perform OTA upgrades in compliance with local regulations.

Incorrect OTA upgrade operations may cause device software damage and inability to boot. Please assess the risks yourself！





Standard Accessories：

=========================

USB-C rechager *1

USB-C recharge cable *1

500Mhz Antenna *2

600Mhz Antenna *2

Storage package *1

Manual *1

Qualification certificate *1