Message-ID: <4210419A.6030400@gmx.ch>
From: Marco Trudel <mtrudel@gmx.ch>
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To: bluez-users@lists.sourceforge.net
Subject: Re: [Bluez-users] position of multiple bluetooth dongles
References: <420B9635.6020701@gmx.ch> <200502101825.15870.cijoml@volny.cz>
In-Reply-To: <200502101825.15870.cijoml@volny.cz>
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Date: Mon, 14 Feb 2005 07:13:46 +0100

Hello Michael

thank you a lot for this information.
Another question regarding this topic:

Does it help/make any difference if the two dongles have a distance of 
~11cm? Does this lead to equivalent/less interferences?
I have no idea about how radios send out their signals. I could imagine 
that if they spread their signal and there's another dongle just above the 
sending one that sends out a signal too, the interference is much worse 
than if they have a little distance, because the point of the problem is 
not right at the source.

Will rfcomm ensure the correctness of received data? something like a 
checksum and automatic retransmission of data if a brocken packet is 
recognized?

regards
Marco Trudel


Michal Semler wrote:
> BT 1.1 dongles may interference...
> BT 1.2 only when comunication with 1.1 devices - 1.2 devices can never 
> interference
> 
> Michal
> 
> Dne ?t 10. ?nora 2005 18:13 Marco Trudel napsal(a):
> 
>>Hello everybody
>>
>>Maybe someone knows this:
>>If two bluetooth dongles are used (a class1 and a class2), could it lead to
>>signal interfereces/problems if they're just above each other and both have
>>to send a lot of data at the same time?
>>
>>With "right above each other", I mean this:
>>http://www1.ch2.conrad.com/m/7000_7999/7100/7160/7162/716282_LB_00_FB.EPS.j
>>pg (dongle cases are removed).
>>
>>
>>kind regards
>>Marco
>>
>>
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