[Leica] Re: Wi-fi and Bluetooth

[montoid at earthlink.net (Montie)]

Only going to be one computer and prob a laptop due to
roll top desk space limitations so looks like I don't have
to worry about Wi-Fi at this time!  Thanks Leonard
Montie

> Lets make things a little simpler.
> 
> 1. If you have only 1 computer and a cable or DSL modem you don't  
> need a router. Just connect your computer to the modem via ethernet  
> cable.
> 
> 2. If you have more than 1 computer at nearly the same location you  
> will need a router to connect to both computers. The router then  
> connects to the modem, all via ethernet cable.
> 
> 3. If you have more than 1 computer located in other rooms or on a  
> different floor, the preferred interface would be  to go wireless and  
> create a local area network. This consists of a router that connects  
> to the modem via ethernet cable and to the various computers via  
> wireless 802.11G (or older B) wireless cards.
> 
> In my home I have 2 Apple computers, 1 Windows computer and a laptop  
> connected wireless to my cable modem. When my son visits he has  
> 802.11G built into his powerbook. As soon as he turns it on he's  
> connected to my network.
> 
> 4. Bluetooth is a short distance protocol used to connect accessories  
> to larger devices. The wireless headset connects to my cell phone via  
> Bluetooth. My wireless mouse and keyboard connect to my iMac via  
> Bluetooth.
> 
> Len Taupier
> RF Design Manager
> Motorola Inc.
> 
> 
> (now retired)
> 
> 
> On Dec 12, 2006, at 7:59 PM, Lawrence Zeitlin wrote:
> 
> >
> > On Dec 12, 2006, at 6:37 PM, Monte wrote:
> >
> >> I get Bluetooth, but
> >> what the hell is Wi-Fi 802.11g??  Thanks again for the help!
> >
> >
> > Wi-Fi is the generic name for the RF link between computers and a  
> > local area network (WLAN) router. Enough of the gobbledegook here.  
> > Your cable or DSL wideband iink to the internet terminates in a  
> > modem which separates the internet signal from the TV and/or phone  
> > signals. The modem, in turn, is attached to a router which usually  
> > offers both wired and wireless connection to the computer(s) at  
> > that location. The RF signal is at 2.4Gz, a band set aside by the  
> > FCC for a variety of uses including communication and  
> > (unfortunately) microwave ovens. The IEEE designation for one form  
> > of communication in this band is 802.11. There are several flavors  
> > and speeds of devices operating under the 802.11 designation. The  
> > oldest and most common is 802.11b. This has a maximum throughput of  
> > about 11Mb/second but is usually slower. It is the kind implemented  
> > in first generation Wi-Fi systems including Apple's original  
> > Airport. It tends to have a relatively long range, up to 300 ft.  
> > without an external antenna. 802.11g is a faster implementation in  
> > the same band. It can speed up to 54Mb/sec. Newer computers are  
> > equipped with 802.11g cards. Apple's Airport Extreme is of this  
> > type. Both systems degrade gradually by slowing down if the range  
> > is too great or the signal is poor. The earlier system is  
> > compatible with the later system but only at the 11Mb speed.  
> > Because every 802.11 system can operate at the slower speed, that  
> > is the one used in Starbucks and most public places. Wi-Fi is still  
> > in development but the two described are the most used.
> >
> > Bluetooth is a very low power short range system (about 30 ft.)  
> > which is intended to connect devices to a local computer without  
> > using a wire.
> >
> > If you are connected to the internet by a wideband link, the  
> > fastest way to get signals to your computer is by a wire directly  
> > to the modem or router. Ethernet cables can handle over 100Mb/sec.  
> > And they are extremely cheap and reliable. Most modern computers,  
> > including all Apples, come with a built in ethernet capability. Wi- 
> > Fi is mostly for portability and convenience.
> >
> > Larry Z
> >
> > _______________________________________________
> > Leica Users Group.
> > See http://leica-users.org/mailman/listinfo/lug for more information
> 
> 
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