Oooooooh, very nice. I wonder if el cheapo brand sectors that advertise electrical downtilt follow this as well? I hope so, otherwise, what’s the point? Mechanical tilt during installation is not rocket science.
From: Daniel White Sent: Thursday, November 05, 2015 12:32 PM To: af@afmug.com Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120degree dual slantantenna Some things I quickly found online: http://www.kathrein-scala.com/tech_bulletins/MEdowntilt.pdf http://commscope.com/docs/electrical-mechanical_downtilt_effect_on_pattern_performance_wp-103755.pdf A quick glance at the Commscope seems to talk about variable electric tilt vs fixed electrical tilt… but the concept is the same. Thank you, Daniel White afmu...@gmail.com Cell: +1 (303) 746-3590 Skype: danieldwhite Social: LinkedIn: Twitter From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Thursday, November 5, 2015 11:22 AM To: af@afmug.com Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120degree dualslant antenna Maybe this is a good time to ask if there is a difference between “electrical” and “mechanical” downtilt? If not, then it’s not a big deal, other than the confusion of telling the tower guys to uptilt the sector 2.5 degrees if you want 2.5 degrees downtilt. But 120 degrees is a wide sector, and if “electrical” downtilt means like an upside down ice cream cone, rather than like cranking down an awning, that would be an important advantage. Because mechanical downtilt on a wide sector has more effect in the middle than at the edges, plus it becomes very critical that the sector is mounted absolutely plumb. Otherwise you can end up aiming at birds on one side and worms on the other. Last time I checked, neither birds nor worms pay for Internet. From: Daniel White Sent: Wednesday, November 04, 2015 11:29 PM To: af@afmug.com Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120degree dualslant antenna That depends on a variety of factors right? · What is the average distance of your clients to the AP? · Is there elevation changes? · What is the AGL of the antenna? · What is the AGL of the CPE? · How far away is the next sector/tower? Effectively it’s a geometry question. 4 degree downtilt seems standard on carrier antennas though… but they also are trying to keep the cells smaller. Thank you, Daniel White afmu...@gmail.com Cell: +1 (303) 746-3590 Skype: danieldwhite Social: LinkedIn: Twitter From: Af [mailto:af-boun...@afmug.com] On Behalf Of Ken Hohhof Sent: Wednesday, November 4, 2015 7:54 PM To: af@afmug.com Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120 degree dualslant antenna But 4 degrees downtilt on a sector with 7 degree vertical beamwidth seems excessive unless you’re doing really small cells. From: Daniel White Sent: Wednesday, November 04, 2015 5:22 PM To: af@afmug.com Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120 degree dualslant antenna Alpha Wireless makes a great sector. Alpha is the antenna OEM for Telrad and Airspan among others. http://alphaantennas.com/products/single-band/3300-3800mhz-sector/aw3232/ If you need more information let me know offlist. Daniel White Regional Director – Carrier & Channel Sales Member of the Board of Directors - WISPA Toll Free: (855) 471-7823 Mobile: (303) 746-3590 Skype: danieldwhite Social: LinkedIn: Twitter www.crossoverdistribution.com High Capacity, LTE, MIMO, Microwave Solutions, Engineering Services In-Building Cellular / DAS Solutions, iBwave Design Services From: Af [mailto:af-boun...@afmug.com] On Behalf Of Mathew Howard Sent: Wednesday, November 4, 2015 3:55 PM To: af <af@afmug.com> Subject: Re: [AFMUG] recommendations for 3.65 Ghz 120 degree dual slant antenna KP makes one - I haven't used them myself, but I've always only ever heard good things about their antennas. I can't think of any others in 120 degree off hand. On Wed, Nov 4, 2015 at 12:30 PM, Paul McCall <pa...@pdmnet.net> wrote: Anybody have a recommendation for 3.65 Ghz 120 degree dual slant sector antenna ? Paul McCall, Pres. PDMNet / Florida Broadband 658 Old Dixie Highway Vero Beach, FL 32962 772-564-6800 office 772-473-0352 cell www.pdmnet.com pa...@pdmnet.net -------------------------------------------------------------------------------- This email has been checked for viruses by Avast antivirus software. www.avast.com -------------------------------------------------------------------------------- This email has been checked for viruses by Avast antivirus software. www.avast.com -------------------------------------------------------------------------------- This email has been checked for viruses by Avast antivirus software. www.avast.com
