connecting pda and laptop at 100m

[moe]

Hallo everybody, I'm new in this forum as well as I'm new at bluetooth, I just bought the ipaq 2210 and I would like to set up a PAN with my pc, I knew that the transmission range is limited to 10m, but lately I read about high power bluetooth devices that allow a 100m range. Is it possible to connect at that distance or range is limited to the lowest power bluetooth device? I hope somebody can give me a help on this

[btooth]

i believe it will be limited to the weakest device.

and even today, i have seen a lot of device sending out rather weak signals. i was trying to connect to a Sony T68 and within only around 2-3m, the signal comes and goes.

[alxdotnet]

Yes, I believe bluetooth is right.
But if your computer has a 100m capable connection and so does your PDA, then other devices which r not being used may "go to sleep," allowing the more powerful connection.

[moe]

Originally Posted by bluetooth

i believe it will be limited to the weakest device.

and even today, i have seen a lot of device sending out rather weak signals. i was trying to connect to a Sony T68 and within only around 2-3m, the signal comes and goes.

My pda is an Ipaq 2210 and I guess it has a 0db bluetooth so it will not work over 10m even if I have a 20db bluetooth access point? I wonder if I will be able to connect trough some walls...

[alxdotnet]

Originally Posted by moe

My pda is an Ipaq 2210 and I guess it has a 0db bluetooth so it will not work over 10m even if I have a 20db bluetooth access point?

Right-o. Your 20db access point is theoretically capable of 100m, if you have 20db devices. A 20db device could reach this distance, though.

A 0db device can connect at ranges less than 1m. A 4db device can reach 10m, and 20db devices could possibly see 100m, which incindentally is better than my wireless 802.11g network sees...kind of odd given Bluetooth's PAN origins.

Originally Posted by moe

I wonder if I will be able to connect trough some walls...

Paper walls maybe. Actually, as long as there is no interference and your AP has a good antenna, it's possible.

Originally Posted by bluetooth

i believe it will be limited to the weakest device.

Not exactly. If you are using an access point, then the communcation channel is from device to AP to device, so as long as each individual device sees the AP, they see each other and can communicate.

[moe]

Originally Posted by alxdotnet

Right-o. Your 20db access point is theoretically capable of 100m, if you have 20db devices. A 20db device could reach this distance, though.

A 0db device can connect at ranges less than 1m. A 4db device can reach 10m, and 20db devices could possibly see 100m, which incindentally is better than my wireless 802.11g network sees...kind of odd given Bluetooth's PAN origins.

Paper walls maybe. Actually, as long as there is no interference and your AP has a good antenna, it's possible.


Not exactly. If you are using an access point, then the communcation channel is from device to AP to device, so as long as each individual device sees the AP, they see each other and can communicate.

right ipaq has 4db but I still dont get it, shouldn't it work like the gsm? I mean high power transmitting antenna that covers big distances and relatively weak device antenna to catch the connession? Thanks a lot for your advices

[alxdotnet]

You can never reach the advertised ranges anyway.

A small antenna is not necessarily a measure of distance (look at cell phones) but instead the power of the transmitter determines range.

[moe]

Originally Posted by bluetooth

i believe it will be limited to the weakest device.

and even today, i have seen a lot of device sending out rather weak signals. i was trying to connect to a Sony T68 and within only around 2-3m, the signal comes and goes.

I just came back from my local electronic store, they had the sony t610 bluetooth, well I was amazed since I could connect up to at least 15 meters!, maybe because it was a huge open room but I tried to walk outside and my pda could still see the t610, what do you think?

[devil_dog]

Originally Posted by moe

I just came back from my local electronic store, they had the sony t610 bluetooth, well I was amazed since I could connect up to at least 15 meters!, maybe because it was a huge open room but I tried to walk outside and my pda could still see the t610, what do you think?

probably the store had some sort of bluetooth repeater or sumthing...

[BlueDaze]

Your range is limited to the lowest power bluetooth device, and you'll never get the full 100m distance of Class 1 bluetooth with current Bluetooth 1.2 or Bluetooth 1.1. But coming soon is Bluetooth 2.0...