RE: [WISPA] omni tower separation
Is this all just omni's (i.e signal is bouncing of the structure straight back at the omni causing noise) and what's the preferred for 5.8GHz? Don't use omni's myself but it always handy to know just in case ;) -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mac Dearman Sent: 17 February 2006 04:42 To: WISPA General List Subject: Re: [WISPA] omni tower separation I to can kick in some experience here! I mounted an omni one time on top of a building on a tripod. I shoved the Omni as high as I could reach to push it up(hehehehe not to high) on the mast and tightened it down. The omni was not as tall as the mast and was mounted about 3" off the mast. I checked it out about a week later and noticed that it always had 900kbps of traffic on the wireless interface even though there was no ethernet traffic (mrtg graphs via SNMP) and it really puzzeled me. After stewing over it I decided it was either a bad radio card or that stinking mast beside the omni - - it was the mast :-) Moral of the story = get some distance from whatever is close! Mac Dearman Maximum Access, LLC www.inetsouth.com www.radioresponse.org - Original Message - From: "Tom DeReggi" <[EMAIL PROTECTED]> To: "WISPA General List" Sent: Thursday, February 16, 2006 8:42 PM Subject: Re: [WISPA] omni tower separation >I can tell you from experience, mounting it at 6 inches is not a good idea. >We did that once, in a rush job, when the climbers were there and mounting >hardware was not. Definate holes in coverage were identified after the >fact. > > The answer of how far from the tower, is also a factor of how big your > tower is, and of what kind. > > I recommend 18"-24". As for Rick's suggestion of 36", never tried it, so > don't know, but I see no reason not to take his word for it. > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > - Original Message - > From: "Rick Smith" <[EMAIL PROTECTED]> > To: "WISPA General List" > Sent: Thursday, February 16, 2006 7:47 PM > Subject: Re: [WISPA] omni tower separation > > >> >> actually, at 900 mhz, 36" is preferred. >> >> On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10 >> db improvements in my customer connections that were NLOS when I moved >> the antenna out from 24" to 36" >> >> >> Marlon K. Schafer wrote: >> >>> I've always been taught that 18" is the minimum. >>> marlon >>> >>> - Original Message - >>> *From:* Kurt Fankhauser <mailto:[EMAIL PROTECTED]> >>> *To:* wireless@wispa.org <mailto:wireless@wispa.org> >>> *Sent:* Thursday, February 16, 2006 10:12 AM >>> *Subject:* [WISPA] omni tower separation >>> >>> Is 6 inches enough separation with a 9db omni from a 25g tower?, >>> I’ve done it with 12 before and I had no problems, just wondering >>> what 6 would do. >>> >>> Kurt Fankhauser >>> >>> WAVELINC >>> >>> 114 S. Walnut St. >>> >>> Bucyrus, OH 44820 >>> >>> 419-562-6405 >>> >>> www.wavelinc.com <http://www.wavelinc.com> >>> >>> >>> -- >>> WISPA Wireless List: wireless@wispa.org <mailto:wireless@wispa.org> >>> >>> Subscribe/Unsubscribe: >>> http://lists.wispa.org/mailman/listinfo/wireless >>> >>> Archives: http://lists.wispa.org/pipermail/wireless/ >>> >> -- >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ > > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.10/263 - Release Date: 16/02/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.10/263 - Release Date: 16/02/2006 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] omni tower separation
I to can kick in some experience here! I mounted an omni one time on top of a building on a tripod. I shoved the Omni as high as I could reach to push it up(hehehehe not to high) on the mast and tightened it down. The omni was not as tall as the mast and was mounted about 3" off the mast. I checked it out about a week later and noticed that it always had 900kbps of traffic on the wireless interface even though there was no ethernet traffic (mrtg graphs via SNMP) and it really puzzeled me. After stewing over it I decided it was either a bad radio card or that stinking mast beside the omni - - it was the mast :-) Moral of the story = get some distance from whatever is close! Mac Dearman Maximum Access, LLC www.inetsouth.com www.radioresponse.org - Original Message - From: "Tom DeReggi" <[EMAIL PROTECTED]> To: "WISPA General List" Sent: Thursday, February 16, 2006 8:42 PM Subject: Re: [WISPA] omni tower separation I can tell you from experience, mounting it at 6 inches is not a good idea. We did that once, in a rush job, when the climbers were there and mounting hardware was not. Definate holes in coverage were identified after the fact. The answer of how far from the tower, is also a factor of how big your tower is, and of what kind. I recommend 18"-24". As for Rick's suggestion of 36", never tried it, so don't know, but I see no reason not to take his word for it. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: "Rick Smith" <[EMAIL PROTECTED]> To: "WISPA General List" Sent: Thursday, February 16, 2006 7:47 PM Subject: Re: [WISPA] omni tower separation actually, at 900 mhz, 36" is preferred. On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10 db improvements in my customer connections that were NLOS when I moved the antenna out from 24" to 36" Marlon K. Schafer wrote: I've always been taught that 18" is the minimum. marlon - Original Message - *From:* Kurt Fankhauser <mailto:[EMAIL PROTECTED]> *To:* wireless@wispa.org <mailto:wireless@wispa.org> *Sent:* Thursday, February 16, 2006 10:12 AM *Subject:* [WISPA] omni tower separation Is 6 inches enough separation with a 9db omni from a 25g tower?, I’ve done it with 12 before and I had no problems, just wondering what 6 would do. Kurt Fankhauser WAVELINC 114 S. Walnut St. Bucyrus, OH 44820 419-562-6405 www.wavelinc.com <http://www.wavelinc.com> -- WISPA Wireless List: wireless@wispa.org <mailto:wireless@wispa.org> Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] omni tower separation
Take my word also - We fought our 900mhz links for weeks until we moved 36inches away from the tower - even at 30inches you'll be kickin yerself in the arse. For 2.4ghz - I've seen issues with anything less then 18inches of seperation from a tower. JohnnyO On Thu, 2006-02-16 at 21:42 -0500, Tom DeReggi wrote: I can tell you from experience, mounting it at 6 inches is not a good idea. We did that once, in a rush job, when the climbers were there and mounting hardware was not. Definate holes in coverage were identified after the fact. The answer of how far from the tower, is also a factor of how big your tower is, and of what kind. I recommend 18"-24". As for Rick's suggestion of 36", never tried it, so don't know, but I see no reason not to take his word for it. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: "Rick Smith" <[EMAIL PROTECTED]> To: "WISPA General List" <wireless@wispa.org> Sent: Thursday, February 16, 2006 7:47 PM Subject: Re: [WISPA] omni tower separation > > actually, at 900 mhz, 36" is preferred. > > On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10 > db improvements in my customer connections that were NLOS when I moved the > antenna out from 24" to 36" > > > Marlon K. Schafer wrote: > >> I've always been taught that 18" is the minimum. >> marlon >> >> - Original Message - >> *From:* Kurt Fankhauser [EMAIL PROTECTED]> >> *To:* wireless@wispa.org wireless@wispa.org> >> *Sent:* Thursday, February 16, 2006 10:12 AM >> *Subject:* [WISPA] omni tower separation >> >> Is 6 inches enough separation with a 9db omni from a 25g tower?, >> I’ve done it with 12 before and I had no problems, just wondering >> what 6 would do. >> >> Kurt Fankhauser >> >> WAVELINC >> >> 114 S. Walnut St. >> >> Bucyrus, OH 44820 >> >> 419-562-6405 >> >> www.wavelinc.com <http://www.wavelinc.com> >> >> >> -- >> WISPA Wireless List: wireless@wispa.org wireless@wispa.org> >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] omni tower separation
I can tell you from experience, mounting it at 6 inches is not a good idea.
We did that once, in a rush job, when the climbers were there and mounting
hardware was not. Definate holes in coverage were identified after the fact.
The answer of how far from the tower, is also a factor of how big your tower
is, and of what kind.
I recommend 18"-24". As for Rick's suggestion of 36", never tried it, so
don't know, but I see no reason not to take his word for it.
Tom DeReggi
RapidDSL & Wireless, Inc
IntAirNet- Fixed Wireless Broadband
- Original Message -
From: "Rick Smith" <[EMAIL PROTECTED]>
To: "WISPA General List"
Sent: Thursday, February 16, 2006 7:47 PM
Subject: Re: [WISPA] omni tower separation
actually, at 900 mhz, 36" is preferred.
On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10
db improvements in my customer connections that were NLOS when I moved the
antenna out from 24" to 36"
Marlon K. Schafer wrote:
I've always been taught that 18" is the minimum.
marlon
- Original Message -
*From:* Kurt Fankhauser <mailto:[EMAIL PROTECTED]>
*To:* wireless@wispa.org <mailto:wireless@wispa.org>
*Sent:* Thursday, February 16, 2006 10:12 AM
*Subject:* [WISPA] omni tower separation
Is 6 inches enough separation with a 9db omni from a 25g tower?,
I’ve done it with 12 before and I had no problems, just wondering
what 6 would do.
Kurt Fankhauser
WAVELINC
114 S. Walnut St.
Bucyrus, OH 44820
419-562-6405
www.wavelinc.com <http://www.wavelinc.com>
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Re: [WISPA] omni tower separation
actually, at 900 mhz, 36" is preferred. On one tower, with trango, using an OD9-11 (11 dbi vert omni), I saw 8-10 db improvements in my customer connections that were NLOS when I moved the antenna out from 24" to 36" Marlon K. Schafer wrote: I've always been taught that 18" is the minimum. marlon - Original Message - *From:* Kurt Fankhauser <mailto:[EMAIL PROTECTED]> *To:* wireless@wispa.org <mailto:wireless@wispa.org> *Sent:* Thursday, February 16, 2006 10:12 AM *Subject:* [WISPA] omni tower separation Is 6 inches enough separation with a 9db omni from a 25g tower?, I’ve done it with 12 before and I had no problems, just wondering what 6 would do. Kurt Fankhauser WAVELINC 114 S. Walnut St. Bucyrus, OH 44820 419-562-6405 www.wavelinc.com <http://www.wavelinc.com> -- WISPA Wireless List: wireless@wispa.org <mailto:wireless@wispa.org> Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] omni tower separation
I've always been taught that 18" is the minimum. marlon - Original Message - From: Kurt Fankhauser To: wireless@wispa.org Sent: Thursday, February 16, 2006 10:12 AM Subject: [WISPA] omni tower separation Is 6 inches enough separation with a 9db omni from a 25g tower?, Ive done it with 12 before and I had no problems, just wondering what 6 would do. Kurt Fankhauser WAVELINC 114 S. Walnut St. Bucyrus, OH 44820 419-562-6405 www.wavelinc.com -- WISPA Wireless List: wireless@wispa.orgSubscribe/Unsubscribe:http://lists.wispa.org/mailman/listinfo/wirelessArchives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] omni tower separation
Well, I just changed one from 8 inch sep to 24 inch sep yesterday. I got a 5db improvement on most of the clients and a 2 db drop in noise levels YMMV Kurt Fankhauser wrote: Is 6 inches enough separation with a 9db omni from a 25g tower?, I’ve done it with 12 before and I had no problems, just wondering what 6 would do. Kurt Fankhauser WAVELINC 114 S. Walnut St. Bucyrus, OH 44820 419-562-6405 www.wavelinc.com No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.10/262 - Release Date: 2/16/2006 -- Blair Davis AOL IM Screen Name -- Theory240 West Michigan Wireless ISP 269-686-8648 A division of: Camp Communication Services, INC -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
[WISPA] omni tower separation
Is 6 inches enough separation with a 9db omni from a 25g tower?, I’ve done it with 12 before and I had no problems, just wondering what 6 would do. Kurt Fankhauser WAVELINC 114 S. Walnut St. Bucyrus, OH 44820 419-562-6405 www.wavelinc.com -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
