[BTM] BT and 802.11b

LaGrua Jeffrey A NORC LaGruaJA at corona.navy.mil
Mon Dec 9 07:24:37 PST 2002

> -----Original Message-----
> From: Richard McKay [mailto:richard.mckay1 at virgin.net] 
> Sent: Sunday, December 08, 2002 6:11 AM
> To: Bluetooth-Mac
> Subject: Re: [BTM] BT and 802.11b
> REF the following msg:
> >From: Robert Weller <n6ne at yahoo.com>
> >Subject: BT and 802.11b
> >Date: Mon, 2 Dec 2002 13:43:13 -0800 (PST)
> >To: bluetooth-mac at lists.themacintoshguy.com
> >Does anyone have experience running BT near an 802.11b network? Any 
> >problems? Can a mac have both 802.11b and BT interfaces running 
> >continuously?
> I have had some problems when both the USB adapter (TDK BT), 
> iBook and airport hub (newer snow model) were less than a 
> meter apart from each other, this disappeared when the 
> distance increased...I have read this somewhere else as well.

This is most likely due to their relatively similar Bandwidth spectrums as
well as their close proximity acting together to create reflections which
are inducing enough harmonics to create signal interference and thus
disruption of comms. I find I have the same problem at home with my wife's
iBook and my PowerBook (both with Airport cards). When we sit together on
the couch, I can see the rest of the network in other parts of the house,
but not her. When I move to the chair (~8'-10' away) she reappears. Again,
signal reflection. As Robert mentioned, move them apart till your signal
improves. HTH.

Jeff A. La Grua BSCS, MCP, MCSE
Scientist - Advanced Projects Division PA23
Performance Assessment Directorate
Corona Division, Naval Surface Warfare Center
P.O. Box 5000
Corona, CA  92878-5000

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