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Comments

Landon

How did you connect the dish to the PCMCIA card? Did the card have a place for the antenna, or did you have to solder, or something?

Jeff

One of the FAQ's asks if this is too much power. As it is stated (300mw = 300 milliwatts) no this is not too much power as this is actually a very small amount. Most handheld personal two-way radios can be operated without an FCC license using the FRS, Family Radio Service. The FRS requires that the radio broadcast at less than or equal to .5 watts or 500 mW. Now if someone mistyped and meant to put 300MW = 300 megawatts then yes this would be a large amount of power for someone with little training and no FCC authorization. I don't intend to suggest that the record holders have little training, just that if anyone else wanted to try this they should educate themselves first.

unwire

The PCMCIA cards used have a maximum power output of 300 milliwatts. During the contest, one side was set to 30 milliwatts, the other to 300 milliwatts.

Bryan Fulkersin

Where did you find Linux drivers for the Zcom cards? I just bought an XI-300HP, and am not able to get it working under linux. Wlan Expert only displays the output of this card at 100mw. How did you set yours to 300? (I know mine will only go to 200)

Luis Quiróz Vera

Dear friends:

I live in Perú's low jungle, where his climate is tropical, I dedicate myself to give oneself wireless's solutions. Which I have achieved at present my distance record to 38.5Kmts . utilizing 34dbi's antennae and 500mw's Acces Point mark Zcom mod. XI1500IB. But I have had inconveniences in transmission when I utilize or I demand but the data transmission resources while byline transference not have (subj) my ping it oscillates in 5ms to 10ms and if I hook but I increase PCs to 200ms - 4000ms and I arrive sometimes to get disconnected.
They have been able to With the experience than you want to toast to me(subj) any suggestion for the better my connection.

Attentively,

Luis Miyaxawani Quiróz Vera

UK-WIFI

NICE!!!
i've got standard USB WI-FI dongle and it only picks up 60% on my home network(encrypted+hardware firewall)stuck it to the front of a sat dish and point it at the window and now have 4 extra networks @ 50-60%.

Jason

I am looking to start a whole town wifi network I was wondering what kind of antennas i would need to do this

mahendra kumar

excellent

hassan chehab

dear sir:
i would like to know more about the product and if it works fine in an urban surrounding.

Erik Wile

In the US you can't transmit more than 20dBm Effective Radiated Power [ERP] which is only 100mW.
Licensed amateur radio operators can transmit legally at higher powers. And it's not just the card's power level, it's the sum of the cards power plus the antenna gain minus any cable losses.
I don't know what the antenna gains were, but it looks like they needed at least 50dB of antenna gain total, so say 25dB on each side... even on the "low power" side they were TX'ing 30mW [15dBm] so that puts them at about 40dBm ... 10Watts ERP! _Way_ above what unlicensed people are allowed to transmit. And if they had the same gain on the 300mW side that's up to 100W ERP... You could start to cook things in that beam. Do not try this in an urban setting or you might blind people!

LVguy

Wow dude, just link it up around the S.West for P2P and let see how good is that network
of yours

John Olson

Pursuant to US CFR-Title 47- part15.247 http://a257.g.akamaitech.net/7/257/2422/13nov20061500/edocket.access.gpo.gov/cfr_2006/octqtr/pdf/47cfr15.247.pdf
at 2.4Ghz (802.11b/g digital modulation) you are limited to an output of 1watt or 30dbm with an antenna gain of no more than 6dB for a omni directional antenna 36dB = 4 Watts. For a point to point however (Same as this example) you may increase the gain of the antenna above 6dB. For every 1dB reduction in power you can increase 3dBi in antenna gain. (3 to 1 Rule)This will allow for up to 52dB per link side at 22dBm output power with an antenna with 30dBi gain without violating the Max power rules. This is for unlicensed usage. Safe exposure limits would indicate at least 6 feet away from the radiator to be within spec on an uncontrolled environment. http://n5xu.ece.utexas.edu/rfsafety/

I thought I would shed a light of truth to this discussion

Jamie

Cant you guys make a web page with instructions on how to build the masterpiece and put it on the market there are a lot of people that would want a long range wireless system similar to yours.

John

Jamie, duplicating this might not be all that useful. First, it is using amateur radio capabilities, so it can't be used for commercial purposes. Second, it seems like it might be overkill, and depends on getting those big dishes up high. That might be OK if you have mountains around, but in most of the US you would have to up very high on a commercial tower or skyscraper to go that distance - that will be very expensive ($1000s monthly).

You might research some of the commercial WISP (wireless ISP) gear, for example StarOS and Mikrotik. You could build a system using that gear that would go 10 to 30 miles for maybe $1000. You would still need line of sight, so some height is needed. The wlanparts.com website shown in some of the graphics above is a good source.

abe jay philippines

i have a hanzen parabolic antenna but idont know how to install the hardwares...

Gihan Galagoda

Thanks for the information.

eric

wooh! that's a challange .those many miles.I wish i was in that team.Any way what it all means is that parabolic dishes have a great gain and are better than any other antenna.Above 20 dB.so just forget about that expensive antenna and use that old dish at home.

Trey, W0KTB

Nice setup, being a HAM and former technician at a wireless ISP makes me want to do this sometime soon. Locally will be impossible where I live. I can dream though- :)

73 guys, keep up the good work.

terry harding

heres the deal...i have some fairly nice hills in any direction from me...
and several peopl within 5 miles of me have open wireless routers and i can connect when i get within 100 to 200 feet with my laptop.
what setup could make it through or around these small hills no less than 2 miles and no more than 5 miles?
can it be done?

ALAIN STEINBERG

All this ,folks, semms to me interssant indeed for in my place in south of france im the only one in my 100 inhab village that dont receive anything from our local communal wifi system
In my situation its only a question of 1 mile resending but ill follow very closely your activities
thanks a lot

Zair

Hey you guys doin a wifi link 10 miles apart is not that hard....I have a 8 mile link P2P with 2 parabolic grid antennas 24 dbi with 100 mw radio on each side and have 80 feet high on one an the other 60 feet.

John Casemier

This is amazing, a 125 mile wifi link. I thought it was cool i bridged router to router 3 floors away but this is awesome! More information on wifi at http://yagiwifiantenna.blogspot.com

Mini Pradeep

Very Good

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