What we need is a new single high or low band channel dedicated for TDD now and that's all by itself. Maybe the FCC would be so kind?
Sent from my iPhone > On Oct 20, 2015, at 12:45 AM, Mike Black <[email protected]> wrote: > > +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:[email protected]] On Behalf Of Hardy, Tim > Sent: Monday, October 19, 2015 8:29 PM > To: [email protected] > 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 <[email protected]> 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 >
