What is the theoretical maximum range of Bluetooth?

Question

Bluetooth

Suppose I strengthened the bluetooth and found a directional antenna (let's leave the legal field for the theoretical one), but the range was 1.7 km and does not go any further. What could be the snag, why not increase the range? A purely theoretical module is the WT-41 Bluegiga.

Answer 1

For tasks, you need to select the right tools, you can read about long-distance communication here . In essence, the further the signal goes, the more deplorable it is. The range at such distances will depend not so much on the equipment as on the protocol , all Bluetooth protocols are designed for a range of no more than 100 meters, so the connection may not work simply because the signal is "too slow". The second problem is noise reduction, the protocol is not designed for such an amount of noise that is formed at the distance indicated in the question and simply cannot extract information from the noise. Solution, do not mock bluetooth, look for the right equipment.

Answer 2

After all, the antenna is just needed to increase the signal-to-noise ratio.
And the propagation speed of radio waves is the same for all protocols.
Only the antenna is needed on both sides.