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USB cable UHF transmitter.
When plugged to a USB port the cable works as usual and the transmitter inside the cable transmits conversations or any sound to a distant receiver.
No batteries needed. The transmitter works as long as it remains plugged to a USB port.
With our Automatic Gain Control system it is able to pick up a whisper up to 40 feet away from the transmitter microphone as clearly as loud speech near it.
Exceptional audio performance.


  • USB cable works and looks as usual.
  • Nothing unusual can be found.
  • Powered by a USB port, no battery required for the transmitter.
  • Only one end of the cable needs to be plugged to provide power.
  • Extremely sensitive built-in microphone.
  • Automatic microphone gain control.
  • Crystal frequency control.

Technical data

Lengh: 1.8 meter (6 feet)
Interface: USB 2.0 , USB 1.1
Range: 500 meters (1700 feet) in open field
           200 meters (700 feet) in a city
Power requirement: USB port
Output power: 20 mW
Frequency: 433 - 434 MHz (300 - 434 MHz on demand)
Modulation type: NFM
Operating temperature: -20 to +60 °C (-4 to 140 °F)

* each UHF transmitter works on a separate frequency channel so several of them can be used sumultaneously.

** if you would like to order transmitters working on different frequencies, or you need different output power, please contact us and provide your requirements.

DU-75 USB cable UHF transmitter

  Price: $340.00
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Available connector types: A-B , A-miniB.
You may provide your requirement during checkout.

Available color: Black

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for use with our transmitters

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Note: All transmitters are supplied on the strick understanding that they will be operated in a lawful manner. It is the purchasers responsibility to comply with the laws in their countries. We decline any resposibility for use of these devices. For more information read the Terms of Sale.
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