General List
Subject: [WISPA] omni upside down
While traveling around, I've noticed a few towers with omnis mounted
upside
down with a neighbor omni mounted right side up. Whats the purpose in
this?
-RickG
To: WISPA General List
Subject: [WISPA] omni upside down
While traveling around, I've noticed a few towers with omnis mounted upside
down with a neighbor omni mounted right side up. Whats the purpose in this?
-RickG
-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of RickG
Sent: Wednesday, January 27, 2010 2:55 PM
To: WISPA General List
Subject: [WISPA] omni upside down
While traveling around, I've noticed a few towers with omnis mounted
upside
down with a neighbor
On Wed, Jan 27, 2010 at 03:55:02PM -0500, RickG wrote:
While traveling around, I've noticed a few towers with omnis mounted
upside down with a neighbor omni mounted right side up. Whats the
purpose in this?
They could be vertically polarized dipole antennas.
--
Scott Lambert
While traveling around, I've noticed a few towers with omnis mounted upside
down with a neighbor omni mounted right side up. Whats the purpose in this?
In our landmobile/paging side we have done this for years. The
antenna MUST support this feature. There is typically a drain plug on
the top
While traveling around, I've noticed a few towers with omnis mounted upside
down with a neighbor omni mounted right side up. Whats the purpose in this?
-RickG
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/ Eje
-Original Message-
From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On
Behalf Of RickG
Sent: Wednesday, January 27, 2010 2:55 PM
To: WISPA General List
Subject: [WISPA] omni upside down
While traveling around, I've noticed a few towers with omnis mounted
, January 27, 2010 2:55 PM
To: WISPA General List
Subject: [WISPA] omni upside down
While traveling around, I've noticed a few towers with omnis mounted upside
down with a neighbor omni mounted right side up. Whats the purpose in this?
-RickG
: [WISPA] omni upside down
Thanks!
Is there any advantage for a WISP to do this?
-RickG
On Wed, Jan 27, 2010 at 4:02 PM, Eje Gustafsson e...@wisp-router.com wrote:
Those are more than likely cell phone sites that have those big whip
antennas going up and down (believe they are 800Mhz frequency range
Subject: Re: [WISPA] omni upside down
Thanks!
Is there any advantage for a WISP to do this?
-RickG
On Wed, Jan 27, 2010 at 4:02 PM, Eje Gustafsson e...@wisp-router.com wrote:
Those are more than likely cell phone sites that have those big whip
antennas going up and down (believe
Of Eje Gustafsson
Sent: Wednesday, January 27, 2010 4:25 PM
To: 'WISPA General List'
Subject: Re: [WISPA] omni upside down
Not much, probably if you need multiple omnis you would install sectors. But
if you need antenna diversity and use omnis this is one of the easier way to
do it since you just
A couple of reasons
1. Antenna mounting space reuse. Standoffs have antennas facing up but
not down. Allows the use of multiple antennas on one mount.
2. Omni antenna designs that will provide more saturation and downtilt
when inverted as an omni has natural uptilt when mounted normally.
My guess was #1. Interesting enough, I have several HighGain Omni units
http://www.l-com.com/productfamily.aspx?id=6414 that work really well. They
dont have the drain hole on the bottom (I had one fill up with water once).
At any rate, I have two water towers within a 1/10th of a mile on each
On 1/27/2010 4:06 PM, RickG wrote:
Thanks!
Is there any advantage for a WISP to do this?
-RickG
On Wed, Jan 27, 2010 at 4:02 PM, Eje Gustafssone...@wisp-router.com wrote:
Those are more than likely cell phone sites that have those big whip
antennas going up and down (believe they are
: [WISPA] omni upside down
Thanks!
Is there any advantage for a WISP to do this?
-RickG
On Wed, Jan 27, 2010 at 4:02 PM, Eje Gustafsson e...@wisp-router.com
wrote:
Those are more than likely cell phone sites that have those big whip
antennas going up and down (believe they are 800Mhz
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