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Class 1 Bluetooth Dongle Test

Myth or Truth: Will a Class 1 Bluetooth dongle boost connnection range of a Class 2 headset?

 

Myth

dualphone Class 1 (100 meter / 330 ft) Bluetooth USB dongle can boost connecting range, even when pairing with a Class 2 (10 meter / 22 ft) Bluetooth headset.

 

People say

btWhen pairing a Bluetooth headset to the computer through a Bluetooth USB dongle, the connection range is determined by the class of the USB dongle. The USB dongle should work like a cell phone base station. The stronger the signal a USB dongle can generate, the farther it can reach. Therefore, when a Class 2 BT headset is pairing with a Class 1 USB dongle, it can work in the 100 meter / 330 ft range.

 

Test Equipment

    1. plantronicsLaptop: hp nx9010
    2. Class 1 USB dongle from Grandvue
    3. Class 2 USB dongle from billionton
    4. BT headset 1: Plantronics Voyager 510
    5. BT headset 2: Grandvue Bluemate-630

     

Test procedure

After successfully pairing the headset and the USB dongle, play a speech .wav file using Microsoft Windows media player. Start to move away from the laptop and see how far away from the laptop the Bluetooth connection will be ceased.

 

Test result

Class 2 USB dongle + Voyager 510: 20 meters
Class 1 USB dongle + Voyager 510: 25 meters
Class 2 USB dongle + Bluemate 630: 15 meters
Class 1 USB dongle + Bluemate 630, facing toward the laptop: 20 meters
Class 1 USB dongle + Bluemate 630, facing away the laptop: 18 meters (start to have significant noise at 15 meters)

 

Conclusion

Using Class 1 USB dongle to pair with the Class 2 BT headset can boost the connection range a little bit. However, it cannot extend the connection to the 100 meter / 330 ft range. The sensitivity of the antenna on the BT headset is another determine factor for how far away from the dongle the headset can be pairing.

 

This test can be used to test out the design margin of the BT headset. Using Class 1 USB dongle and moving to a position more than 10 meter / 33 ft away from the dongle, it can put the Class 2 BT headset in an extreme testing condition.

 

 

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