Interesting and Ironic at the same time... So you are saying that only the 4ft or larger antennas are built to withstand 155 MPH+ winds... the smaller 2ft & 3ft antennas are not spec'ed to survive ?
Wow.. good to know this detail ! The industry is a bit strange... :) Thanks for the info. and Best Wishes for the New Year. Regards. Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net > From: "Hardy, Tim" <tha...@comsearch.com> > To: af@afmug.com > Sent: Sunday, January 1, 2017 10:15:05 AM > Subject: Re: [AFMUG] Question Regarding 11ghz Links. > I worked on this one - we did the interference analysis, coordination and will > do the licensing, but we did not design the links or select antennas, radios, > etc. I believe the answer is that the system had to be able to withstand 155 > MPH + winds and the smallest 11 GHz antennas that meet these requirements are > 4 > footers. Here's more information if you're interested. > http://www.commscope.com/docs/extremeline_microwave_antennas_br-105563.pdf > Get Outlook for iOS > _____________________________ > From: Bill Prince < part15...@gmail.com > > Sent: Friday, December 30, 2016 8:01 PM > Subject: Re: [AFMUG] Question Regarding 11ghz Links. > To: < af@afmug.com > > The PCN had 3 links with a 4' dish at each end of each link for a total of 6 > dishes. > bp<part15sbs{at}gmail{dot}com> > On 12/30/2016 1:32 PM, Eric Kuhnke wrote: >> A good quality 4' dish will have tighter RPE and better f/b ratio than a 2' >> or >> 3' dish. Or maybe they happened to have an extra 4' dish in stock and used it >> because it was "free". >> If it's a new purchase of a 4' dish for a 2 to 4 mile 11 GHz link that would >> be >> pretty silly unless they need seven nines of uptime at full modulation >> (1024QAM >> 5/6 code rate?) in ITU rain zones M, N or P. Tropical locations. >> http://www.racom.eu/images/radost/images/hw/ray/rain_zone_h.png >> On Fri, Dec 30, 2016 at 7:21 AM, Faisal Imtiaz < fai...@snappytelecom.net > >> wrote: >>> I am curious, what is the wisdom behind installing 4ft dishes for a 2/4 mile >>> 11ghz link ? >>> Is there a technical reason ? or is it just a way to maximize the return >>> for the >>> vendor ? >>> Regards >>> Faisal Imtiaz >>> Snappy Internet & Telecom >>> 7266 SW 48 Street >>> Miami, FL 33155 >>> Tel: 305 663 5518 x 232 >>> Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net
