Thread: 1 km wifi

Originally Posted by geonet

Hi,

Please sugest me what hardware i need to convert 15km area into wifi.

surely you can get upto 50kms WiFi with the current products avaliable.

i myself being a system integrator have successfully achieved 50kms [LOS] WiFi at 10Mbps.

and mind you not expensive either...

@delhite2
YOur WIFI router is a TRANSMitter and Receiver combined !

Any Wireless transmission in any wireless spectrum, radiating
more than 100mW power and using External Antenna/s
is ILLEGAL and individuals/company's etc MUST obtain
LICENCE from Wireless Planning & Co ordination Wing of the D.O.T.

When your signal interferes with Aircraft/Marine/Police/Defence /cellphone/ etc
frequencies, special Mobile equipment is used to track the offending system, and
punishment is severe including fine and imprisonment !

Even Cordless Phones ( high power ) with a claimed higher range say 1 to 3 Km
or more are also not allowed.
( A Chinese make unit working in the VHF freq band
some three or four years back was tracked, and users severely
warned . Luckily with the use of cellphone/s this usage has vanished. )

Originally Posted by essbebe

@delhite2
YOur WIFI router is a TRANSMitter and Receiver combined !

Any Wireless transmission in any wireless spectrum, radiating
more than 100mW power and using External Antenna/s
is ILLEGAL and individuals/company's etc MUST obtain
LICENCE from Wireless Planning & Co ordination Wing of the D.O.T.

When your signal interferes with Aircraft/Marine/Police/Defence /cellphone/ etc
frequencies, special Mobile equipment is used to track the offending system, and
punishment is severe including fine and imprisonment !

Even Cordless Phones ( high power ) with a claimed higher range say 1 to 3 Km
or more are also not allowed.
( A Chinese make unit working in the VHF freq band
some three or four years back was tracked, and users severely
warned . Luckily with the use of cellphone/s this usage has vanished. )

................Incorrect information..............

In wifi ISM band its not interfering any other spectrum all "Aircraft/Marine/Police/Defence /cellphone/" uses microwave frequency not standard RF ISM band.

In ISM band up to 1 Watt power can be used without any problem in India as what you have mention 100mW.

Who told that External Antennas are illegal its not illegal up to 35 dbi antenna can be used in India without any problem.

High of the Antenna can be installed up to 10 feet from your terrace above 10 feet need a local authorities permission. even this also due to aircraft sometimes they flight at low high if your building high is around 50 feet e.g 5 floors then you can setup antenna up-to 10 feet more from your current terrace.

High end equipment comes with spectrum analyzer you can select the channel width as per surrounding conditions and frequency of your equipment.

Mobile towers uses up to 25 MHz to 48 Mhz depends on techonology uses like CDMA or GSM GSM have low channel width and CDMA network have more channel width.

In india govt is just like bullish even professional working in their wireless wing blady they don't know about the proper use of the spectrum just they take constancy service from outsource and allot the spectrum to service providers.

No one can object the ISM band as it is the only band available in the world for public safety is never generate any radio activity like other micro waves generates.

interferance is caused by the frequency's differences if there is very less difference between they operating frequency then they interfere each other.

So minimum of 150MHz to 350MHz deference is required in the operating frequencies in a given area if more then one frequency is operating and channel width can be any range from 10MHz to 35Mhz they never interfere each other its an challenge

if have any issue just let me know.

Birender

In ISM band up to 1 Watt power can be used without any problem in India as what you have mention 100mW.

I did not mention ISM band. Industrial Scientific and Medical unlicensed usages, in the Radio spectrum is allowed with LIMITED power output only. ( mostly for indoor use) . Freq Allocation for different Regions 1,2 ,& 3 different.

Each country makes it own use of the Radio spectrum ( now in news in india !).
and restrictions are placed on the spectrum usage.

I am glad to note that you could make a wifi Broadband Link with the above 1W Output limitation for a distance of 45 KM!.( probably in 2 GHz band )

Even for putting up a multi storey building height above 100 feet from Ground level/, needs clearance from Lccal committee comprising various wireless users and WPC) as it will block LOS of wireless spectrum Users in a particular area ( Near Airports/ Met dept/Defence/IATA) etc )


The point that was made, was that Range/power of WIFI routers is limited , and trying for 1KM to 45KM radius broadband usage with a single BB connection, is beyond the scope of this forum.

More information can be obtained at The Wireless Planning and Co-ordination Wing web site.

Para two:

In wifi ISM band its not interfering any other spectrum all "Aircraft/Marine/Police/Defence /cellphone/" uses microwave frequency not standard RF ISM band.

When you travel by Air, you are requested to switch off Cellphones/Laptop
during landing and take off. Probably the pilots/ do not know above info !)

Casual Google search: Extract:
"Extreme" Wi-Fi Router: A Quarter-Mile of Coverage : Ben Patterson : Yahoo! Tech

Extreme" Wi-Fi Router: A Quarter-Mile of Coverage
Mon Nov 19, 2007 4:55PM EST

Need to blanket your house—along with a few surrounding city blocks—with Wi-Fi coverage? The Extreme Range Wi-Fi Router is here.
Gizmodo has the goods on this $284 monster of a wireless router, which promises to blast out your Wi-Fi signal up to a quarter-mile in every direction.
According to its specs, the Extreme Range router packs in 30 dBm of power, the maximum allowed by the FCC (standard Wi-Fi routers only manage about 20 dBm, while FM radio stations average about 80 dBm).
The router supports the usual 802.11b/g wireless standards, along with WEP, WPA2, and WPA-Enterprise encryption. ...................................

Originally Posted by essbebe

I did not mention ISM band. Industrial Scientific and Medical unlicensed usages, in the Radio spectrum is allowed with LIMITED power output only. ( mostly for indoor use) . Freq Allocation for different Regions 1,2 ,& 3 different.

Each country makes it own use of the Radio spectrum ( now in news in india !).
and restrictions are placed on the spectrum usage.

I am glad to note that you could make a wifi Broadband Link with the above 1W Output limitation for a distance of 45 KM!.( probably in 2 GHz band )

Even for putting up a multi storey building height above 100 feet from Ground level/, needs clearance from Lccal committee comprising various wireless users and WPC) as it will block LOS of wireless spectrum Users in a particular area ( Near Airports/ Met dept/Defence/IATA) etc )


The point that was made, was that Range/power of WIFI routers is limited , and trying for 1KM to 45KM radius broadband usage with a single BB connection, is beyond the scope of this forum.

More information can be obtained at The Wireless Planning and Co-ordination Wing web site.

Para two:
When you travel by Air, you are requested to switch off Cellphones/Laptop
during landing and take off. Probably the pilots/ do not know above info !)

Casual Google search: Extract:
"Extreme" Wi-Fi Router: A Quarter-Mile of Coverage : Ben Patterson : Yahoo! Tech

More information can be obtained at The Wireless Planning and Co-ordination Wing web site.

Information given on this website is not updated from past three years you are in the history of India check the latest info on wireless planing.....

When you travel by Air, you are requested to switch off Cellphones/Laptop
during landing and take off. Probably the pilots/ do not know above info !)

All bullish government policies as you know In US flights there is not need to switch off any wifi devices only cell phones are required to switch off because of the microwaves as microwaves are very powerful and it contains very high energy which can disturb airline internal communication systems. only GSM and CDMA cause system failures in radar and airlines communications not Wifi go school and read it do your engineering again.............

You are barking up the wrong tree !
In A Technical discussion in a general forum,
you answer point by point and don't get personal;.

Wifi go school and read it do your engineering again.

2. In Which college you studied that RADAR is Microwave ?.
You are not even aware how frequency spectrum is classified.
Radar Frequency Bands

Radar Freq.jpg



Mention the University/college in India
( I cannot afford your "U.S")
where I can join to update my knowledge about
this particular WIFI Broadband usage for 18 Km !

G013. What is meant by ISM applications and how are the related frequencies used?

The term "unregulated frequencies" is not used within ITU texts. What is often meant by the term "unregulated frequencies" is the frequency bands for industrial, scientific and medical (ISM) applications. The international Table of Frequency Allocations, which is contained in Article 5 of the Radio Regulations (Volume 1), specifies some frequency bands that may be made available for ISM applications (see RR Nos. 5.138 and 5.150 reproduced below):



*

5.138 The following bands: 6765-6795 kHz (centre frequency 6780 kHz), 433.05-434.79 MHz (centre frequency 433.92 MHz) in Region 1 except in the countries mentioned in RR No. 5.280, 61-61.5 GHz (centre frequency 61.25 GHz), 122-123 GHz (centre frequency 122.5 GHz), and 244-246 GHz (centre frequency 245 GHz) are designated for industrial, scientific and medical (ISM) applications. The use of these frequency bands for ISM applications shall be subject to special authorization by the administration concerned, in agreement with other administrations whose radiocommunication services might be affected. In applying this provision, administrations shall have due regard to the latest relevant ITU-R Recommendations.
*

5.150 The following bands: 13553-13567 kHz (centre frequency 13560 kHz), 26957-27283 kHz (centre frequency 27120 kHz), 40.66-40.70 MHz (centre frequency 40.68 MHz), 902-928 MHz in Region 2 (centre frequency 915 MHz), 2400-2500 MHz (centre frequency 2450 MHz), 5725-5875 MHz (centre frequency 5800 MHz), and 24-24.25 GHz (centre frequency 24.125 GHz) are also designated for industrial, scientific and medical (ISM) applications. Radiocommunication services operating within these bands must accept harmful interference, which may be caused by these applications. ISM equipment operating in these bands is subject to the provisions of RR No. 15.13. top

You should give the technical set up of your 18 Km range wifi set up!
1.WIFI router used :
2.Power output
3.Type of Antenna Used.
4. The ISP
5. Country where set up Region 1 Region 2 Region 3
6.Claimed Range 18 Km.
7. Total investment in Dollars /INR..



May be a clean "LOS" in the Sahara Desert !
Specify the freq range of the "Microwave Band"
and whether it is included in
above Extract from ITU.

What WPC has NOT posted in their web site, and you feel it is all "bullshit"
take it up with the authorities
and the Indian Commercial Pilots Association, and educate them !

Originally Posted by essbebe

You are barking up the wrong tree !
In A Technical discussion in a general forum,
you answer point by point and don't get personal;.


2. In Which college you studied that RADAR is Microwave ?.
You are not even aware how frequency spectrum is classified.
Radar Frequency Bands

Radar Freq.jpg



Mention the University/college in India
( I cannot afford your "U.S")
where I can join to update my knowledge about
this particular WIFI Broadband usage for 18 Km !


You should give the technical set up of your 18 Km range wifi set up!
1.WIFI router used :
2.Power output
3.Type of Antenna Used.
4. The ISP
5. Country where set up Region 1 Region 2 Region 3
6.Claimed Range 18 Km.
7. Total investment in Dollars /INR..



May be a clean "LOS" in the Sahara Desert !
Specify the freq range of the "Microwave Band"
and whether it is included in
above Extract from ITU.

What WPC has NOT posted in their web site, and you feel it is all "bullshit"
take it up with the authorities
and the Indian Commercial Pilots Association, and educate them !

here are the details of the setup

You should give the technical set up of your 18 Km range wifi set up!

1.WIFI router used : Matrox MultiBand Radio 250MHz to 85GHz
2.Power output : 1Watt to 25Watts (adjustable)
3.Type of Antenna Used. Mix Sector panel, Omani and Dish reflectors
4. The ISP: JSR Germany
5. Country where set up Germany
6.Claimed Range 18 Km. 75 KMs
<Tower> 150 meters
7. Total investment in Dollars /INR.. 9500 Euros approx

*************************

here are the details of the setup

You should give the technical set up of your 18 Km range wifi set up!

1.WIFI router used : Matrox MultiBand Radio 250MHz to 85GHz
2.Power output : 1Watt to 25Watts (adjustable)
3.Type of Antenna Used. Mix Sector panel, Omani and Dish reflectors
4. The ISP: JSR Germany
5. Country where set up Germany
6.Claimed Range 18 Km. 75 KMs
<Tower> 150 meters
7. Total investment in Dollars /INR.. 9500 Euros approx

1.WIFI router used : Matrox MultiBand Radio 250MHz to 85GHz

Tried search engines Google/Yahoo for details of this "wifiRouter"
in the 250 MHz to 85 GHz range .
No details available.
Good Information that a Broadband Wifi is available in this wide Range
but called a "MultiBand Radio".
Cost of the set up Euro 9500 x Rs 80 approx = Rs 76000/=
UPDATE: 27th Oct 1219Pm

correct your maths its 760000/- not 76000/-

..................................

Great Blunder. Arithmetic error pointed above.
sorry for the mistake. Correct as Rs 7,60,000

a very cheap investment!
( may include the Steel tower cost also for 150 meters height )

Best of Luck to users who want to select this set up !
I quit!

Originally Posted by essbebe

Tried search engines Google/Yahoo for details of this "wifiRouter"
in the 250 MHz to 85 GHz range .
No details available.
Good Information that a Broadband Wifi is available in this wide Range
but called a "MultiBand Radio".
Cost of the set up Euro 9500 x Rs 80 approx = Rs 76000/=
a very cheap investment!
( may include the Steel tower cost also for 150 meters height )

Best of Luck to users who want to select this set up !
I quit!

correct your maths its 760000/- not 76000/-

..................................

EIRP in India allowed is upt 4W.

a 200mW radio with 24dBi antenna is enough for 5 kms link and within the rules of WPC and Govt.

200mW Transmitter output
please check the EIRP for 13 dBi and 24 dBi
antenna gain !
.please check EIRP 4W and 50 watts !
Pure ERP And EIRP Calculator
Cost of antenna : 129 euros . some one calculate in Rupees please.
my arithmetic knowledge is suspect !
24dbi antenna.jpg

a recent article
Finally! A Reasonably Priced Solution For Large Hotel and Campground Wireless Internet

Originally Posted by essbebe

a recent article
Finally! A Reasonably Priced Solution For Large Hotel and Campground Wireless Internet

forget about every thing make a mesh networking with WDS enabled routers and enjoy the smooth connectivity were ever you required. to cover 1 Kms area you need 10 WDS devices which cost around 3800 each 38000 investment INR.

or max 50000/- INR

equipments contact ........

Originally Posted by birender

................Incorrect information..............

In wifi ISM band its not interfering any other spectrum all "Aircraft/Marine/Police/Defence /cellphone/" uses microwave frequency not standard RF ISM band.

In ISM band up to 1 Watt power can be used without any problem in India as what you have mention 100mW.

Who told that External Antennas are illegal its not illegal up to 35 dbi antenna can be used in India without any problem.

High of the Antenna can be installed up to 10 feet from your terrace above 10 feet need a local authorities permission. even this also due to aircraft sometimes they flight at low high if your building high is around 50 feet e.g 5 floors then you can setup antenna up-to 10 feet more from your current terrace.

High end equipment comes with spectrum analyzer you can select the channel width as per surrounding conditions and frequency of your equipment.

Mobile towers uses up to 25 MHz to 48 Mhz depends on techonology uses like CDMA or GSM GSM have low channel width and CDMA network have more channel width.

In india govt is just like bullish even professional working in their wireless wing blady they don't know about the proper use of the spectrum just they take constancy service from outsource and allot the spectrum to service providers.

No one can object the ISM band as it is the only band available in the world for public safety is never generate any radio activity like other micro waves generates.

interferance is caused by the frequency's differences if there is very less difference between they operating frequency then they interfere each other.

So minimum of 150MHz to 350MHz deference is required in the operating frequencies in a given area if more then one frequency is operating and channel width can be any range from 10MHz to 35Mhz they never interfere each other its an challenge

if have any issue just let me know.

Birender

Birender i m starting a wireless ISP in mumbai point to multipoint and i want to install my base station on a 40 feet tower the top of a 7 storey building. will i require any NOC from a local municipal corporation and do they charge.i want to plant 3 rocket M2 with 120 degress sectorial antennas.