The operational distance for the HearLink PLUS paired with a BeHear NOW or BeHear ACCESS is up to ~200ft (~60m).
If you are interested in a more detailed explanation, keep reading.
The BeHear NOW and BeHear ACCESS headsets are Bluetooth Class II devices, while the HearLink PLUS is a Bluetooth Class I device.
A Bluetooth link between two devices is always bi-directional. The actual range depends on radio performance of the transmitter and the receiver on the both sides.
The difference between Class I and Class II Bluetooth devices in radio transmitting power is 16dB (Class I – 20dBm, Class II – 4dBm). Consequently, the power transmitted by a Class I device is ~40 times greater than that of a Class II device (10^(16/10)). The distance is a function of the square root of the power, meaning that the distance can be increased by ~6 times (SQR(40)) from 10m for Class II to 60m for Class I.
In addition, a Class I device has improved receiver sensitivity (by ~4dB), which leads to an increased distance of ~1.5 times. Consequently, typical distance for Class I is 100m vs. 10m for Class II.
When a Class I device is connected to a Class II headset the expected distance is as follows: a. From a Class I transmitter to a Class II receiver – up to 60m (see paragraph #2) b. From a Class II transmitter to Class I receiver – up to 15m (see paragraph #3) c. For a bi-directional it is ~15m, based on the shortest range of #a and #b.
HearLink PLUS as a Class I device provides additional improvements because of its dual-antenna design. The major effect is for the receiving part, since transmitting power is limited according to the standard. For communication with a Class II receiver, like our BeHear headsets, the distance is increased significantly because of this improvement.
Gerontech and Innovation Expo cum Summit (GIES), is the largest geron-technology public education event in Hong Kong. GIES allows the general public, as well as the elderly and rehabilitation service sector, to explore and learn about various gerontechnology solutions. Won't…
Come and join us at this conference to meet face-to-face, learn, explore, experience, and get to know new technologies and innovation in healthcare -- including our BeHear personal hearing amplifiers and express hearing check kiosks. Register here. - Nov. 28…