Hi, I know this doesn't really have much to do with pdas, but I don't know of any good wifi forums. Maybe some of you could point me to some. I live in a more or less rural area, with the nearest broadband access in the closest town 3 miles away. Last time I visited my brother, he told me about a way I may be able to get broadband wirelessly. This is what it boiled down to: I get a omnidirectional antenna and set it up on a friend's house in town, with the friend having cable internet. This makes a wifi "cloud" outside of the friends house. I then use a directional antenna on top of my house to connect to my friend's "cloud" and now have broadband. I am a little skeptical about whether or not this would work. Do any of you know anything about it? Or for that matter where I go from here to do it? Thanks a lot!
An omnidirectional antenna will certainly radiate in all directions, but the resultant signal will be significantly weaker than a signal confined to a specific direction by the antenna. What you really want are two directional antennas pointed at each other.
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Jody Farr
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Actually an omnidirectional with a directional antenna is used quite often if the device with the omni is servicing other devices as an Access Point (AP). What I will say is more important is which device you use as the AP. I have a Linksys at home. They do not put out the full legally allowed power. If you check the Linksys site, you can get a signal boaster to bring them up to the full rated power.
All of this is moot if you do not have line-of-sight. If there is a hill between you and him, the signal will not bend around it. Dense folage will also interfer with 2.4 GHz, but will not block it. If you think you have line-of-sight, then give it a try.
I still doubt it would work. Remember, you're talking about maybe a half-watt of radiated power (assuming near 1:1 SWR) from an omnidirectional antenna, and a directional antenna 3 miles away trying to send/receive data to/from that omni antenna. You'd have to have near-perfect conditions (totally unobstructed line-of-sight and a perfectly tuned directional antenna) before it would be reliable.
And note...the last hyperlink you supplied (to chubbage.com) lists the following equipment (note the plural 'antennas'...they're both directional in this application):
Antennas: 2.4GHz 24dBi gain Hyperlink parabolic grid
73,
N3VVQ (yep, I know a thing or two about antennae :approve: )
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I still doubt it would work. Remember, you're talking about maybe a half-watt of radiated power (assuming near 1:1 SWR) from an omnidirectional antenna, and a directional antenna 3 miles away trying to send/receive data to/from that omni antenna. You'd have to have near-perfect conditions (totally unobstructed line-of-sight and a perfectly tuned directional antenna) before it would be reliable.
And note...the last hyperlink you supplied (to chubbage.com) lists the following equipment (note the plural 'antennas'...they're both directional in this application):
Antennas: 2.4GHz 24dBi gain Hyperlink parabolic grid
73,
N3VVQ (yep, I know a thing or two about antennae :approve: )
Please refer to this link: http://www.timhiggins.com/Sections-article44-page1.php. Linksys sells 7dBi omni-directional antennas. If you pair that with a 14 dBi Yagi, you can go 2.5 miles at high speed or 3.4 miles medium speed. If you move up to a 24 dBi dish, then you get high speed for 5.4 miles or medium speed for 6.3 mile.
I also know a thing or two about antennas and radio. I started in Ground Radio in the service in 1975. I worked on HF, VHF and UHF radio systems in the service. I worked outside the service in a couple Motorla shops. I worked for MCI for several years as a Microwave Field Engineer using 6 GHz and 11 GHz microwave. For the last 18 years, I worked for a electric utility. The first 9 years in radio working on 2.4 GHz moving to 6 GHz microwave, because of Sprint's PCS phone service. We also had VHF and UHF radio systems before moving to a 900 MHz trunked radio system. I also have a FCC General Class Radiotelephone Operator License instead of an Ham radio license. The last 9 years have been spent as a Network Engineer maintain our Cisco equipment, but the old radio knwledge has come in hand when dealing with wireless.
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