Help Me Please!
Surestore
and hardware between 2 building about 2 miles apart and a somewhat line of
sight (the road curves a little). Can anyone help me with this?
Thanks in advance
Don Widders
news:m1Hm9.12382$FO4.2424@sccrnsc03...
There's no such thing as "somewhat line of sight". Roads curve, microwaves
don't. Without knowing what is obscuring your view, I wouldn't venture a
guess as to whether or not an 802.11x link is possible.
Don W.
Surestore
"Don Widders" <wid...@talkwithoutdifficulty.org> wrote in message
news:5dHm9.426298$5r1.18...@bin5.nnrp.aus1.giganews.com...
way, and I really dont want a connection only in the winter (leaves have
fallen ). Sorry.
Thanks again
David Taylor
> sight (the road curves a little). Can anyone help me with this?
This is sort of like being pregnant or not. You can't be sort of
pregnant!!
Is it line of sight or not?!
:-)
Surestore
"David Taylor" <djta...@bigfoot.com> wrote in message
news:MPG.180559fa...@news.cis.dfn.de...
hmmmmm Lets just say no.
;)
bat...@chip.soliddesign.net
One end is aimed slightly up at the edge of the court house about 100
yards south of its position. It is mounted on a 10' mast on the roof
of an old 2 story building. The other end is aimed at the tops of the
trees about a half mile north of its position. it is mounted on a 5'
mast sitting on the ground. I'm using an Orinoco rg1000 remote
booting linux from the other end and an orinoco ap200 both with 24"
pigtails connected to Andrew 26db mesh dishes. I get a 0-7 "link
quality" on the Linux side:
--
# iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
eth1 IEEE 802.11-DS ESSID:"essid" Nickname:"Base Station"
Mode:Managed Frequency:2.412GHz Sensitivity:1/3
Access Point: XX:XX:XX:XX:XX:XX
Bit Rate:1Mb/s RTS thr:off Fragment thr:off
Encryption key:XXXX-XXXX-XX
Power Management:off
Link Quality:0/92 Signal level:-102 dBm Noise level:-97 dBm
Rx invalid nwid:0 invalid crypt:0 invalid misc:102915
--
This connection is good enough for surfing, email and light VNC use.
I plan on putting the antenna mounted on the ground on a 20' mast this
weekend.
Joe
Don Widders
need directional antennas -- the higher the gain, the better your chance of
success. Without knowing what's between the two antennas this could be a
very simple link or an impossible link. If it's really only "a couple of
tree tops", then it's more likely to be simple than impossible.
You'll also need cables to go from the WAP11 to the antenna. These are
available for under $30 each. I recommend keeping the length to a few feet
and mounting the WAP11 at the antenna in a weatherproof enclosure. If power
is not available at that location you can send power to the WAP11 over the
unused pairs in the cat5 cable.
Don W.
David Taylor
Am I missing something here? The signal is of lower strength than the
noise?!
bat...@chip.soliddesign.net
Sometimes. That's why it's not a very good link. There is a lot of
packet loss, but it is still much, much faster than dial up.
I forgot to mention that this link is about a mile and a half.
It depends on the wind. If I execute the command watch -n 0 iwconfig
2> /dev/null, the Link Quality will range between 0 and 7 (I think
that is the difference between signal and noise) in less than 3
seconds.
I just ran it again and got Link Quality:4/92 Signal level:-93 dBm Noise level:-97 dBm.
My other link is a clear LOS with two 14 Db yagis about 10' off the
ground down an alley for about four blocks getting a constant link
quality of 23.
Joe
K Bloch
will vary depending on weather etc. If the link is important use good
quality components. This means stay away from Dlink, Linksys, anything
else under about $300 per access point or bridge.
Also use high gain antennas at least 21 dBi gain or better. Higher
gain means more captured signal which reduces packet loss etc.
"Surestore" <tmar...@schebler.com> wrote in message news:<egIm9.14667$xI5.3403@sccrnsc02>...
David Taylor
That makes more sense. A signal ABOVE the noise floor, the other one
makes no sense! :-)
David.