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syssolutFlag for United States of America

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Extending wireless access to another part of building

I have a building that has internet access.   The internet comes in modem then a switch/router.  Of one port is a "G" access point for wireless in that section of the building.   There is now a ro0om wioth 9 computers in another section of the building.   I could run Cat 5e but the layout of the building is crazy because there were sections added on at different times.  What would I need to run wireless to that room of 9 computers.   Distance is about 75-100 ft away with about 4 walls separating them.   Can I put a wireless repeater/access point half way in between to extend the internet from the incoming location to that room  with 9 computers?
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I thought an access point was only used for transmitting wireless to wireless adapters.  

So would I use it something like this:


internet                                  Access          (75-100 ft)                                           Access         9 wireless
Access  -  Switch/Router -   Point       -  -   -   -   -    -   -   -   -   Bridge - Switch -   Point     -       computers
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Another option is using Ethernet on Powerline (not power over Ethernet). You can use some devices which they called powerline for transfering Ethernet on Electricity but it really depends on the distance. Because sometimes the physical distance from one outlet to another is about 75ft but the cable has been used is about 200ft or more. Once you installed the adapter on it's software will tell you the distance and signal strengths.


[Internet]     [Switch]      [Powerline ]                 [Powerline]       [access] /  [9 Wirless]
[Access   ]----[Router]-----[Adapter   ]=======[Adaptor   ]-----[point  ] /  [Computers]

-------------  Ethernet (10/100 Mbps)
======   Electricity (85 Mbps)

Note 1: I should mention the only down side part is the Powerline in maximum speed works at 85Mbps which is fine for internet access but not good for application use especially for 9 computers.

Note 2: There is a new version which reach up to 200Mbps. Which I never used it.

I normally use {Netgear Powerline 85 Adapter Kit XETB1001}. The new release is {Powerline AV Ethernet Adapter Kit XAVB101}.
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BTW, 100 ft isn't a problem if line of sight, but 4 walls probably will be. Also, if using directional antennas, you'll need them on both ends.
I tried a USB adapter and found it will connect at 65% to the present wireless even at that distance.  I will try that and if it isn't working well, then I will try one of your suggestions.   Thanks
Thanks for suggestions