>>> Instead, the challenge is in assessing and accepting the risk of possibly >>> bucking your own 11GHz links or other operator's 11GHz links on or near >>> your two endpoints. As there is no reliable way to calculate this type of >>> interference, you may only become aware of the problem after you have >>> installed and turned up your TDMA system.
Call me stupid, and please explain how that is ......I can understand the issue of channel/polarity availability...however how is this potential interference different from current ..... Today, one cannot use the same channel/polarity on the same site anyway... The B11, actually opens up the possibility of channel reuse, on the same site with angular separtion ...(possibility being a key word). 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: "Mike Black" <mbl...@bamicrowave.com> > To: af@afmug.com > Sent: Tuesday, October 20, 2015 12:45:25 AM > Subject: Re: [AFMUG] Mimosa B11: Exactly what does the mounting look like? > +1 to Tim's remarks in this thread. The challenge isn't in coordinating the > same > frequency pair in H and V between two sites, in both directions. Instead, the > challenge is in assessing and accepting the risk of possibly bucking your own > 11GHz links or other operator's 11GHz links on or near your two endpoints. As > there is no reliable way to calculate this type of interference, you may only > become aware of the problem after you have installed and turned up your TDMA > system. > If there are no other 11GHz systems within about a half km of either site and > you don't plan to expand either site with additional 11GHz equipment from > other > vendors, you may be ok. If not, then ? > Mike Black > Black & Associates > 727-773-9016 > www.bamicrowave.com > black & associates > Frequency Coordination ● FCC Licensing ● Engineering Design > -----Original Message----- > From: Af [mailto:af-boun...@afmug.com] On Behalf Of Hardy, Tim > Sent: Monday, October 19, 2015 8:29 PM > To: af@afmug.com > Subject: Re: [AFMUG] Mimosa B11: Exactly what does the mounting look like? > In the olden golden days building the MCI route with full block systems, we > would have "bucks" or "bumps" in frequency plans when required, and we learned > first hand how important it was to use ultra high performance antennas or > better in such situations. With very little free space loss, antenna > performance is key and there is very little reliable data on close-coupling > antenna performance, so it is extremely difficult to accurately calculate > expected interference levels in these situations. With the prevalence of 2&3' > antennas these days, antenna isolation will be an even larger challenge. > Sent from my iPhone > > On Oct 19, 2015, at 8:03 PM, Seth Mattinen < se...@rollernet.us > wrote: > >> On 10/19/15 16:56, George Skorup wrote: > >> To make Tim's point, we're co-located on a couple towers with other > >> 11GHz users and using both the high and low of a channel pair at both > >> ends is unpossible. (yes, that's a word :) > > It's a perfectly cromulent word. > > ~Seth
