how bluethooth device work, what is the frequency range and how it goes through buildings?

Answer 1

Bluetooth is an industrial specification for wireless personal area networks (PANs), also known as IEEE 802.15.1. Bluetooth provides a way to connect and exchange information between devices like personal digital assistants (PDAs), mobile phones, laptops, PCs, printers, digital cameras and video game consoles such as the Nintendo Wii and Sony PlayStation 3 via a secure, globally unlicensed short range radio frequency.

The name Bluetooth is derived from the cognomen of a 10th century king of Denmark, Harald Bluetooth. According to the inventors of the Bluetooth technology, Harald engaged in diplomacy which led warring parties to negotiate with each other, making Bluetooth a fitting name for their technology, which allows different devices to talk to each other.[1]. The name of the king in Danish is Harald Blåtand and the Bluetooth logo is based on the H and B runes.

http://en.wikipedia.org/wiki/Blue_tooth

Answer 2

Bluetooth is a low-power, short-range service in the 2.40 - 2.48 GHz range. The most common use currently is for cordless headsets for mobile phones. Some PDAs can use it for data exchange.

Range is limited to 30 feet or less. It does not go through buildings very well. Even a thin wall will block the signals for the most part.

Answer 3

hi.
..bluetooth uses RADIOWAVES (just like a FM radio) so it can pass through buildings....it uses a method called frequency hopping for pairing with devices..i`m not sure about the frequency i think its about 2GHZ...check wiki i`m damnsure you`ll get what u want