Dont Use long range bluetooth transmitters ... Why???
Many Bluetooth manufacturers will talk about how their devices can reach
distances of 250m, 1km, and up to 16 kilometre, don’t be fooled! To
understand why, you firstly need to know some basics...
Three Types of Bluetooth
The Bluetooth standard has three classes of radio: Class one, two and three. Class three is rarely used and only travels a short distance, Class two communicated up to 10m (most phones are class two) and Class one can transmit up to 100m (Huetouch Max, Xtra and Lite are all Class one).
Importantly a single Class one transmitter can only server up to 7 simultaneous connections i.e. talk to 7 phones, therefore a Huetouch Lite with one class one transmitter can communicate or download to 7 phones at once where as the Max can communicate to 21 phones as it has three transmitters, this capacity issue is key to understanding effective Bluetooth Marketing.
How do you get more than 10m?
However if you couple a class one device with a class two device, you can effectively increase the range of the class two device from 10m to up to a maximum of 30 meters for most phones. You can NOT reach any further than this as the RF power output from a phone is simply too low to be able to communicate back. Bluetooth Marketing is a two way conversation as the sending device needs acknowledgment from the users phone for: permission to send or ignore; the phone type and for file transfer checking to ensure the actual message has been delivered correctly. 30m is the maximum effective communications range.
Only with directional high gain antenna could any further distance be reached but the “beam” of Bluetooth would be focused into a tiny directional beam, that a phone would have to be in the exact location the antenna was pointing to communicate with it, most Bluetooth Marketing relies on reaching phones anywhere in the Zones proximity.
Don't break the Law!
In addition in the EU there are strict wireless laws governed by the “Radio Equipment and Telecommunications Terminal Equipment Directive” many high power transmitters from the US and other countries are simply illegal to use in Europe.
Despite the fact that simple physics makes Bluetooth Marketing to phones over distance impossible there still remains many fundamental flaws with the idea of boosting range. Imagine you could build a magic Bluetooth box that could communicate for 1000m or even 1800m to phones and imagine the phones had huge antennas and power supplies strong enough to talk back; the system would still not work. This goes back to the capacity issue highlighted earlier; if you could reach every phone in a 1000m radius your Bluetooth device simply would not have enough capacity to serve them all. Its like having a super-long network cable and running it to every home with a PC within a kilometre. The communications traffic would stop! the network would grind to a halt because there would simply be to many devices to serve. Ultimately you can only serve 21 phones at once from a Bluetooth Zone, no matter how big the Zone is.
So how can you reach more phones over larger distances?
Only through networking Zones together, with the Huetouch product range “30 Meter Zones” can be connected together giving a blanket coverage of Bluetooth Zones over any distance which importantly will have enough capacity to server the majority of phones in the area without becoming oversubscribed. Just like in computing, in the early days people believed one super computer would calculate everything just as they now believe one Bluetooth box might reach all phones, in actuality computing power increase by adding many millions of individual PC’s together on the internet, the same is true with Bluetooth networking. Many single “Zones” can be linked together to provide maximum capacity to communicate with phones over large distances. Size isn’t everything, capacity coverage is, this is the secret so successful large range Bluetooth Networking.
Three Types of Bluetooth
The Bluetooth standard has three classes of radio: Class one, two and three. Class three is rarely used and only travels a short distance, Class two communicated up to 10m (most phones are class two) and Class one can transmit up to 100m (Huetouch Max, Xtra and Lite are all Class one).
Importantly a single Class one transmitter can only server up to 7 simultaneous connections i.e. talk to 7 phones, therefore a Huetouch Lite with one class one transmitter can communicate or download to 7 phones at once where as the Max can communicate to 21 phones as it has three transmitters, this capacity issue is key to understanding effective Bluetooth Marketing.
How do you get more than 10m?
However if you couple a class one device with a class two device, you can effectively increase the range of the class two device from 10m to up to a maximum of 30 meters for most phones. You can NOT reach any further than this as the RF power output from a phone is simply too low to be able to communicate back. Bluetooth Marketing is a two way conversation as the sending device needs acknowledgment from the users phone for: permission to send or ignore; the phone type and for file transfer checking to ensure the actual message has been delivered correctly. 30m is the maximum effective communications range.
Only with directional high gain antenna could any further distance be reached but the “beam” of Bluetooth would be focused into a tiny directional beam, that a phone would have to be in the exact location the antenna was pointing to communicate with it, most Bluetooth Marketing relies on reaching phones anywhere in the Zones proximity.
Don't break the Law!
In addition in the EU there are strict wireless laws governed by the “Radio Equipment and Telecommunications Terminal Equipment Directive” many high power transmitters from the US and other countries are simply illegal to use in Europe.
Despite the fact that simple physics makes Bluetooth Marketing to phones over distance impossible there still remains many fundamental flaws with the idea of boosting range. Imagine you could build a magic Bluetooth box that could communicate for 1000m or even 1800m to phones and imagine the phones had huge antennas and power supplies strong enough to talk back; the system would still not work. This goes back to the capacity issue highlighted earlier; if you could reach every phone in a 1000m radius your Bluetooth device simply would not have enough capacity to serve them all. Its like having a super-long network cable and running it to every home with a PC within a kilometre. The communications traffic would stop! the network would grind to a halt because there would simply be to many devices to serve. Ultimately you can only serve 21 phones at once from a Bluetooth Zone, no matter how big the Zone is.
So how can you reach more phones over larger distances?
Only through networking Zones together, with the Huetouch product range “30 Meter Zones” can be connected together giving a blanket coverage of Bluetooth Zones over any distance which importantly will have enough capacity to server the majority of phones in the area without becoming oversubscribed. Just like in computing, in the early days people believed one super computer would calculate everything just as they now believe one Bluetooth box might reach all phones, in actuality computing power increase by adding many millions of individual PC’s together on the internet, the same is true with Bluetooth networking. Many single “Zones” can be linked together to provide maximum capacity to communicate with phones over large distances. Size isn’t everything, capacity coverage is, this is the secret so successful large range Bluetooth Networking.
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