The solid dishes are much better than the grids. The 26db grids are
pretty decent, but the 29db grids (both PacWireless and Equinox) are
poor compared to the solid dish 29db antennas. I saw an 8db improvement
in signal switching from a 29db grid to a 29db solid dish antenna at a
couple of my sites.
Matt Larsen
vistabeam.com
Mark Koskenmaki wrote:
My expeirence is that the grids are on par, gain-wise, with the solid
dishes. The solid dishes have MANY RF advantages, but a 26 db grid will do
26 db and 29 dish will do 29.
the solid dishes have advantages in stability, beam accuracy, front/back
ratio, and so on. But the gain is the gain, it seems.
----- Original Message -----
From: "Steve" <[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Sunday, April 22, 2007 8:27 AM
Subject: Re: [WISPA] 5GHz Amps
Does anyone have some real-world experience comparing the grid with the
solid 5.8 antennas.
Is the listed gain accurate in describing performance? or are there
additional advantages of the solid dish at equivalent gain ratings?
I have only installed grid at this point, due to local high wind
considerations and the cost factor.
Thanks.
Steve
--
Mark Koskenmaki wrote:
I don't know what equiopment you use... but... here's a scenario...
20 dbm radios... 15 db panel on one side and a 32 db solid dish on
the
other. At 15 miles, you should have a -68 signal. (Araya's link
calculator
says this) You're WELL within the P2P eirp rules for 5.8, and at -68
you
should be able to use a star-os or mikrotik or other similar based link
at
around 36Meg data rate.
My stuff will stay pretty much at 54meg data rate at a -68, and even
serious
weather fade should keep you at 24Meg or above.
Workable? pacwireless sells the solid 32db dish for 270 online.
I sometimes use Compex 23 dbm a/b/g radios, for the power at 5 ghz, and
they
cost what I used to pay for CM-9's.
----- Original Message -----
From: "Mark Nash" <[EMAIL PROTECTED]>
To: "WISPA General List" <[email protected]>
Sent: Saturday, April 21, 2007 4:28 PM
Subject: [WISPA] 5GHz Amps
I'm needing to do a 14-mile link at 5.8GHz. I will have to use a
15"-or-so flat panel antenna due to building owner's asthetics
requirements.
On this 8-story building, I'll mount to the side of the masonry, then
I'll
have about 25 feet of LMR-400 from the antenna to a weatherproof
enclosure
with 110v power.
On the other side I'll be 100' up on a tower on a hilltop, and I can
use a
higher-gain antenna.
I believe I'll have to use an amplifier to achieve this.
Soo...
A) Am I incorrect about this?
B) If I'm correct, what 5GHz amps have you found to be effective?
C) Opinions on using regular or bi-directional amps?
Mark Nash
Network Engineer
UnwiredOnline.Net
350 Holly Street
Junction City, OR 97448
http://www.uwol.net
541-998-5555
541-998-5599 fax
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