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sunhux

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Extending my home broadband Wifi beyond 5km

http://www.ebay.com/itm/Long-Range-3KM-High-Power-5800MW-58DBI-USB-Wireless-Wifi-Adapter-Antenna-Applied-/351012238114?pt=LH_DefaultDomain_0&hash=item51b9f5b322

My office is about 6km from my home & I'm exploring if I could extend my home's
Wifi to say 7km or more.   The item above only goes up to 3km.

Q1:
The items below has good Amazon ratings but they did not indicate what's the distance/range
they could extend the Wifi signal, any idea?

http://www.amazon.com/NETGEAR-N300-Wi-Fi-Range-Extender/dp/B004YAYM06/ref=sr_1_7?s=pc&ie=UTF8&qid=1424453034&sr=1-7&keywords=wifi+extender

http://www.amazon.com/TP-LINK-TL-WN822N-Wireless-External-Antennas/dp/B00416Q5KI/ref=sr_1_10?s=pc&ie=UTF8&qid=1424453034&sr=1-10&keywords=wifi+extender

Q2:
Do suggest any other devices (pls provide the URL/links to purchase the device) that could extend
the Wifi up to 7km or more

Q3:
Will the throughput drop with the longer distance?  Can this be calculated?
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sunhux

ASKER

My current Wifi broadband modem is enhanced version of 2Wire: I can post the exact model if this
info helps with my queries above.  If it doesn't help, let me know so I dont have to post it.

I live on 11-12 storeys building so I guess it's tall enough to reach my office without much of
building hindering the signals.  If it works, my brother who stays 3km away from my place at
36 storey (about 36x 3.5m per storey) could share my Wifi too
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Dave Baldwin
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http://www.ebay.com/itm/Ubiquiti-NanoBridge-M2-18dBi-NB-2G18-outdoor-MIMO-2-4GHz-/291376190978?pt=LH_DefaultDomain_0&hash=item43d75fd602

is the above M2 good enough?  M5 costs more.
Can these devices work in British Commonwealth countries or it works regardless of where I am located?
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