I'm not so sure about that Marlon. I put in a 10 mile link the other day
just using a pair of cm9's and rootennas.
xxxxxxx x6:0e x5.6 88 -74 -66 48 54 C
Of course this was A.
I try to keep the long shots 5 gig and the short ones 2 gig.
The way I figure it, there's a lot of 2 gig out there in all shapes and
flavors and when you go 10 - 15 miles it's inevidable that there will be
some interference.
If we are talking the middle of nowhere, you can easily do 15 miles with
cm9 G, no amps.
Mark has issues with G because he is using mostly V2 G, I believe.
V2 G is a diferent animal, a diferent driver than V3. V3 is the best to
date.
Marlon K. Schafer wrote:
with sites that have 10 users in a 15 mile RADIUS, you have to have an
amp....
marlon
----- Original Message ----- From: "George Rogato" <[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Sunday, February 04, 2007 11:51 AM
Subject: Re: [WISPA] Typical OFDM CPE antennas
Amps?
The success of G is less noise and less power. IMHO
Never looked for a G amp or tried a G high powered card.
Marlon K. Schafer wrote:
Has anyone found an amp that'll work CORRECTLY with g AND b?
marlon
----- Original Message ----- From: "George Rogato"
<[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Sunday, February 04, 2007 11:21 AM
Subject: Re: [WISPA] Typical OFDM CPE antennas
Nothing scientific Mac, but I think lots of G ap's work better than
lots of B ap's.
Seems when I've seen high powered B ap's in the mix there can be
issues. Where as when I see only low powered G things still work.
The area I cover is fairly small, so i'm getting densly built out
with omni's and sectors all over the place.
Mac Dearman wrote:
How are y'all running "G" in so many places? I would love to
implement G,
but I have so many towers sectored out and then we have so many
clients
running wireless routers close to the CPE that I feel like there
would be
trouble in Paradise here!!
Are any of you running G on anything but an Omni antenna? (Multiple
antennas on one tower?)
Mac
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Lonnie Nunweiler
Sent: Sunday, February 04, 2007 12:30 PM
To: WISPA General List
Subject: Re: [WISPA] Typical OFDM CPE antennas
Totally agree. A bad G link will still give as good as a GOOD B link.
G will give 5 mbps even when it is close to not connecting and B
requires superb signals to get 5 mbps.
Lonnie
On 2/4/07, George Rogato <[EMAIL PROTECTED]> wrote:
I have quite abit of G out there. All the clients and ap's I install
today are G.
60's is great, 70's work just fine too.
60's get top performance, 70' is still a great very fast
connection and
even low 80's beat B.
B stands for Bad
G stands for Good
Marlon K. Schafer wrote:
It's not about antenna size. It's about signal levels.
Most g radios need -60ish signal levels to work well. Use the
antennas
that you need to make it work right.
Find the sensitivity levels of the product you are using, run the
calcs,
and compute a 10 dB or so fade margin.
laters,
marlon
----- Original Message ----- From: "Tom DeReggi"
<[EMAIL PROTECTED]>
To: "WISPA General List" <wireless@wispa.org>
Sent: Saturday, February 03, 2007 12:38 PM
Subject: [WISPA] Typical OFDM CPE antennas
I wanted to get some feedback from the List.
Typically, what Dbi gain antennas are you desiring for OFDM short
Near-LOS or Mid-range CPE links?
Is 18 dbi enough?
I'm well aware that 18dbi will not be good for many applications
(long
range or noisy), but what percentage of CPE installtions would
it be
good for?
Could 75% of the CPE installs be acheived with 18dbi?
I personally, would pick a 21-23db antenna as a preferred
choice, but
PacWireless Rootennas are 19dbi, and often used with 13-15 dbm CM9
cards. The beamwidth of 18dbi (< 20-30 degrees) is pretty good for
interference resilience and OFDM maximized, and if more gain was
needed it could be accommodated with higher power radios such
Teletronic's >18dbm Atheros cards or Ubiquiti's SR5 18-26db cards.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
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