The standard operating range for this device is 10 meters or about 32 feet in an OPEN environment without any obstacles in the way. If you're not getting a similar range and there aren't any walls or floors between the dongle and the receiving device, this is likely due to radio interference.
We see this most often if the adapter is connected to the back of a desktop computer, where there is a lot of random radio noise generated by the processor and system parts. Moving the adapter to the front of the computer often helps, as does using a USB2.0 extension cable (like this one) to move the adapter away from the computer.
An Intel white paper also confirmed that poorly shielded USB 3.0 ports will cause radio interference. If your device is having range issues when plugged into a USB 3.0 port, a USB extension cable can help with this too.
Bluetooth devices communicate on the 2.45 gigahertz frequency (between 2.402 GHz and 2.480 GHZ, to be exact). Devices using the same frequency will cause interference, for example, multiple WiFi access points. WiFi signals are much stronger than Bluetooth. Bluetooth automatically avoids channels that have strong WiFi singles. However if all the local channels are dominated by strong WiFi signals, the Bluetooth signal has no place to go. Computer accessories such as a wireless mouse/keyboard also use the same frequency. That might also have an effect on the adapter range. Examples of other devices using the same frequency are baby monitors, some new indoor cordless phones and even a typical microwave oven.
If your device has range issues and none of the above situations apply, please contact us.
We also have long range / class 1 Bluetooth transmitters such as those below that you may want to consider:
Avantree Leaf (USB Bluetooth audio dongle, 80 feet)
Avantree Oasis (150 feet transmission range, support for RCA / 3.5mm / optical audio ports)
Avantree Audikast (100 feet transmission range, support for USB / RCA / 3.5mm / optical audio ports)