Wireless G
-
What's the best way to extend Wireless G over 700ft of trees? I found a few Wireless extenders, but none tell me the range of those. Anybody? Cheers Al My eMail control My Blog
-
What's the best way to extend Wireless G over 700ft of trees? I found a few Wireless extenders, but none tell me the range of those. Anybody? Cheers Al My eMail control My Blog
"You have an arrow in your butt!" - Fiona:cool:
Welcome to CP in your language. Post the unicode version in My CP Blog [ ^ ] now.People who don't understand how awesome Firefox is have never used CPhog[^]CPhog. The act of using CPhog (Firefox)[^] alone doesn't make Firefox cool. It opens your eyes to the possibilities and then you start looking for other things like CPhog (Firefox)[^] and your eyes are suddenly open to all sorts of useful things all through Firefox. - (Self Quote)
-
What's the best way to extend Wireless G over 700ft of trees? I found a few Wireless extenders, but none tell me the range of those. Anybody? Cheers Al My eMail control My Blog
You have a couple of choices - high-gain antennas, or repeaters. If you don't own the land between connections, repeaters are probably out, as you have to mount and power them along the way at a height great enough to "see" over the trees. A beam antenna, commonly of a yagi type, will boost the signal enough to make the trip, but it still has to get above the trees. Trees look like mirrors to UHF frequencies, so there's no way around it; you have to have a direct line-of-sight path to make a reliable connection. My Internet connection uses 802.11b technology, a lower speed standard, but operating on the same frequency - 2.45 GHz - as your 802.11g system. I use an 18dB yagi antenna mounted on the roof to connect to an access point about 1200' away from the house, but I've managed to reach the full 6 miles to the ISP's home office with this setup. Unfortunately somebody planted a palm tree in my LOS path and blocked that route.:sigh: You won't get as long range as I do because of the higher data rate of the 'g' standard, but you should manage to make it 700' with off the shelf equipment. It's not too messy to calculate what antenna you need, though it's only a rough calculation. Start with the power output of your device - this is usually stated in dBm (10log(P/1 mW)). Then subtract the loss in free air over 700' (there are websites that list such information). Subtract the loss in the cable from your computer to the antenna mounting point. The result is the amount of signal power remaining by the time it reaches the other end. If this is near or less than the sensitivity of the receiving device ( reported in -xxx dB) you'll need to add a directional antenna with enough gain to make up the difference. For a reliable connection you'll want at least 16 dB of excess signal, and if the other end also uses a cabled antenna, you need to adjust for the loss at that end, too. Tedious, I know, but installers do it every day. I took the easy way - had the ISP install it for me.;P "...a photo album is like Life, but flat and stuck to pages." - Shog9
-
You have a couple of choices - high-gain antennas, or repeaters. If you don't own the land between connections, repeaters are probably out, as you have to mount and power them along the way at a height great enough to "see" over the trees. A beam antenna, commonly of a yagi type, will boost the signal enough to make the trip, but it still has to get above the trees. Trees look like mirrors to UHF frequencies, so there's no way around it; you have to have a direct line-of-sight path to make a reliable connection. My Internet connection uses 802.11b technology, a lower speed standard, but operating on the same frequency - 2.45 GHz - as your 802.11g system. I use an 18dB yagi antenna mounted on the roof to connect to an access point about 1200' away from the house, but I've managed to reach the full 6 miles to the ISP's home office with this setup. Unfortunately somebody planted a palm tree in my LOS path and blocked that route.:sigh: You won't get as long range as I do because of the higher data rate of the 'g' standard, but you should manage to make it 700' with off the shelf equipment. It's not too messy to calculate what antenna you need, though it's only a rough calculation. Start with the power output of your device - this is usually stated in dBm (10log(P/1 mW)). Then subtract the loss in free air over 700' (there are websites that list such information). Subtract the loss in the cable from your computer to the antenna mounting point. The result is the amount of signal power remaining by the time it reaches the other end. If this is near or less than the sensitivity of the receiving device ( reported in -xxx dB) you'll need to add a directional antenna with enough gain to make up the difference. For a reliable connection you'll want at least 16 dB of excess signal, and if the other end also uses a cabled antenna, you need to adjust for the loss at that end, too. Tedious, I know, but installers do it every day. I took the easy way - had the ISP install it for me.;P "...a photo album is like Life, but flat and stuck to pages." - Shog9
Nice response. I really had a hunch you'd have some knowledge to share on this one. Is it legal to run 18dB? The highest I've seen on the shelf is 7dB...
"You have an arrow in your butt!" - Fiona:cool:
Welcome to CP in your language. Post the unicode version in My CP Blog [ ^ ] now.People who don't understand how awesome Firefox is have never used CPhog[^]CPhog. The act of using CPhog (Firefox)[^] alone doesn't make Firefox cool. It opens your eyes to the possibilities and then you start looking for other things like CPhog (Firefox)[^] and your eyes are suddenly open to all sorts of useful things all through Firefox. - (Self Quote)
-
You have a couple of choices - high-gain antennas, or repeaters. If you don't own the land between connections, repeaters are probably out, as you have to mount and power them along the way at a height great enough to "see" over the trees. A beam antenna, commonly of a yagi type, will boost the signal enough to make the trip, but it still has to get above the trees. Trees look like mirrors to UHF frequencies, so there's no way around it; you have to have a direct line-of-sight path to make a reliable connection. My Internet connection uses 802.11b technology, a lower speed standard, but operating on the same frequency - 2.45 GHz - as your 802.11g system. I use an 18dB yagi antenna mounted on the roof to connect to an access point about 1200' away from the house, but I've managed to reach the full 6 miles to the ISP's home office with this setup. Unfortunately somebody planted a palm tree in my LOS path and blocked that route.:sigh: You won't get as long range as I do because of the higher data rate of the 'g' standard, but you should manage to make it 700' with off the shelf equipment. It's not too messy to calculate what antenna you need, though it's only a rough calculation. Start with the power output of your device - this is usually stated in dBm (10log(P/1 mW)). Then subtract the loss in free air over 700' (there are websites that list such information). Subtract the loss in the cable from your computer to the antenna mounting point. The result is the amount of signal power remaining by the time it reaches the other end. If this is near or less than the sensitivity of the receiving device ( reported in -xxx dB) you'll need to add a directional antenna with enough gain to make up the difference. For a reliable connection you'll want at least 16 dB of excess signal, and if the other end also uses a cabled antenna, you need to adjust for the loss at that end, too. Tedious, I know, but installers do it every day. I took the easy way - had the ISP install it for me.;P "...a photo album is like Life, but flat and stuck to pages." - Shog9
This is awesome info. Do you know any good device that can give me the better range? My eMail control My Blog
-
Nice response. I really had a hunch you'd have some knowledge to share on this one. Is it legal to run 18dB? The highest I've seen on the shelf is 7dB...
"You have an arrow in your butt!" - Fiona:cool:
Welcome to CP in your language. Post the unicode version in My CP Blog [ ^ ] now.People who don't understand how awesome Firefox is have never used CPhog[^]CPhog. The act of using CPhog (Firefox)[^] alone doesn't make Firefox cool. It opens your eyes to the possibilities and then you start looking for other things like CPhog (Firefox)[^] and your eyes are suddenly open to all sorts of useful things all through Firefox. - (Self Quote)
code-frog wrote:
Is it legal to run 18dB?
I'm not running 18 dB of power, just boosting the output to compensate for cable loss, so I believe it's perfectly legal. Remember that it's focused into a narrow beam, too, so that the total power referenced to a dipole is still very small; and sidelobes are suppressed to reduce the chance of interfering with any other service in the same band. Like my microwave oven...;) "...a photo album is like Life, but flat and stuck to pages." - Shog9
-
This is awesome info. Do you know any good device that can give me the better range? My eMail control My Blog
Huh?:confused: As I mentioned, a decent antenna will probably do the trick. I don't know off hand what brand it is, though - the ISP selected it and installed it for me. Another hurdle might be that most 802.11b/g devices I've seen lack an external antenna jack, so you have to be choosy about which one you buy. Mine's an old Lucent card, called ORiNOCO, and which is no longer manufactured. You might try Google, find a few manufacturers and do some emailing to Sales for recommendations. Then buy the hardware on eBay.:-D "...a photo album is like Life, but flat and stuck to pages." - Shog9
-
Huh?:confused: As I mentioned, a decent antenna will probably do the trick. I don't know off hand what brand it is, though - the ISP selected it and installed it for me. Another hurdle might be that most 802.11b/g devices I've seen lack an external antenna jack, so you have to be choosy about which one you buy. Mine's an old Lucent card, called ORiNOCO, and which is no longer manufactured. You might try Google, find a few manufacturers and do some emailing to Sales for recommendations. Then buy the hardware on eBay.:-D "...a photo album is like Life, but flat and stuck to pages." - Shog9
Sweet! All is in the antenna! Got it. I'll start my reseach now Al My eMail control My Blog
-
What's the best way to extend Wireless G over 700ft of trees? I found a few Wireless extenders, but none tell me the range of those. Anybody? Cheers Al My eMail control My Blog
Depending on your router there may be a simple solution provided by http://www.sveasoft.com/[^]. Many consumer routers are based on the same components as their big-brother counterparts. Sveasoft's firmware replacements supposedly allow access to many of the features hidden on consumer grade routers. One of those features happens to be output power which, for consumer devices, is set very, very low. Hope it helps - I haven't tried it yet myself but I have an early-release LinkSys WRT54G router that apparently this works very well on. Cheers, Drew.
-
code-frog wrote:
Is it legal to run 18dB?
I'm not running 18 dB of power, just boosting the output to compensate for cable loss, so I believe it's perfectly legal. Remember that it's focused into a narrow beam, too, so that the total power referenced to a dipole is still very small; and sidelobes are suppressed to reduce the chance of interfering with any other service in the same band. Like my microwave oven...;) "...a photo album is like Life, but flat and stuck to pages." - Shog9
Roger Wright wrote:
power referenced to a dipole is still very small; and sidelobes
Roger, you make me feel so naughty with talk like that... :) Seriously though, great originating reply :) ¡El diablo está en mis pantalones! ¡Mire, mire! Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)! SELECT * FROM User WHERE Clue > 0 0 rows returned Save an Orange - Use the VCF!
-
You have a couple of choices - high-gain antennas, or repeaters. If you don't own the land between connections, repeaters are probably out, as you have to mount and power them along the way at a height great enough to "see" over the trees. A beam antenna, commonly of a yagi type, will boost the signal enough to make the trip, but it still has to get above the trees. Trees look like mirrors to UHF frequencies, so there's no way around it; you have to have a direct line-of-sight path to make a reliable connection. My Internet connection uses 802.11b technology, a lower speed standard, but operating on the same frequency - 2.45 GHz - as your 802.11g system. I use an 18dB yagi antenna mounted on the roof to connect to an access point about 1200' away from the house, but I've managed to reach the full 6 miles to the ISP's home office with this setup. Unfortunately somebody planted a palm tree in my LOS path and blocked that route.:sigh: You won't get as long range as I do because of the higher data rate of the 'g' standard, but you should manage to make it 700' with off the shelf equipment. It's not too messy to calculate what antenna you need, though it's only a rough calculation. Start with the power output of your device - this is usually stated in dBm (10log(P/1 mW)). Then subtract the loss in free air over 700' (there are websites that list such information). Subtract the loss in the cable from your computer to the antenna mounting point. The result is the amount of signal power remaining by the time it reaches the other end. If this is near or less than the sensitivity of the receiving device ( reported in -xxx dB) you'll need to add a directional antenna with enough gain to make up the difference. For a reliable connection you'll want at least 16 dB of excess signal, and if the other end also uses a cabled antenna, you need to adjust for the loss at that end, too. Tedious, I know, but installers do it every day. I took the easy way - had the ISP install it for me.;P "...a photo album is like Life, but flat and stuck to pages." - Shog9
I use Wireless ISP too. My problem was I was getting signal saturation on 11b, so they moved me to 11a, distance about 12km, works beautifully now :)**
How xacc.ide transforms text to colored words on the screen
Intel PentuimM (aka Centrino) undervolting**
-
Nice response. I really had a hunch you'd have some knowledge to share on this one. Is it legal to run 18dB? The highest I've seen on the shelf is 7dB...
"You have an arrow in your butt!" - Fiona:cool:
Welcome to CP in your language. Post the unicode version in My CP Blog [ ^ ] now.People who don't understand how awesome Firefox is have never used CPhog[^]CPhog. The act of using CPhog (Firefox)[^] alone doesn't make Firefox cool. It opens your eyes to the possibilities and then you start looking for other things like CPhog (Firefox)[^] and your eyes are suddenly open to all sorts of useful things all through Firefox. - (Self Quote)
The 18dB is actually 18dBg which represents the antenna directional selectivity. This simply means you make better use of the transmitter power. Elaine :rose: P.S. Who is Fiona and how did it get there? :laugh: The tigress is here :-D
-
I use Wireless ISP too. My problem was I was getting signal saturation on 11b, so they moved me to 11a, distance about 12km, works beautifully now :)**
How xacc.ide transforms text to colored words on the screen
Intel PentuimM (aka Centrino) undervolting**
leppie wrote:
11a, distance about 12km
Wow! That's really impressive performance.:-D "...a photo album is like Life, but flat and stuck to pages." - Shog9