80 GHz antenna manufacturers and radio vendors don't sell 3' or 4' size antennas, because they would be near impossible to align by hand. A typical 4 to 5 km link between two 60 cm dishes with high powered 80 GHz FDD radios is hard enough to align.
Also the beam width at 90 ot 120 cm is so narrow that a high building or tower changing temperatures during the day will be enough to move a fixed-aim beam way off aim. It's the sort of thing that can only be aimed and maintained dead on center by very precise stepper motor servos and software control systems. On Fri, Nov 11, 2016 at 1:01 AM, Gino Villarini <g...@aeronetpr.com> wrote: > 4 ft antenna in MMW that¹s pretty high gain. Im guessing the eirp was high > but mostly due to gain > > 105 watts of dc consumption is not that much, at 48 v that¹s about 2.1 > ampsŠ My Trangos consume something in that range, I¹ll bet Ceragons IP20 > are in that range too > > On 11/10/16, 4:24 PM, "Af on behalf of Robert Andrews" > > > > *Gino Villarini* > President > Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 > > <af-boun...@afmug.com on behalf of i...@avantwireless.com> wrote: > > >But for how long and 105 watts of power? Was that the output power into > >the dish? Then the link must have glowed in the daylight... Or was > >that the ac power into the radio? Something says that this isn't going > >to be easy to FCC license... > > > >On 11/10/2016 12:16 PM, Josh Reynolds wrote: > >> Look at the map of the link. They DID do it on the coast. That's pretty > >> good. > >> > >> > >> On Nov 10, 2016 1:56 PM, "Sterling Jacobson" <sterl...@avative.net > >> <mailto:sterl...@avative.net <sterl...@avative.net>>> wrote: > >> > >> 2GHz of spectrum in the 30-300GHz range at 8 miles? > >> > >> Obviously, that's not going to work with any moisture in the air. > >> > >> Since their aim is " to connect outlying or under-served regions of > >> the world" I think they are talking about the desert regions of > >>Africa? > >> > >> > >> -----Original Message----- > >> From: Af [mailto:af-boun...@afmug.com <mailto:af-boun...@afmug.com > <af-boun...@afmug.com>>] > >> On Behalf Of Josh Reynolds > >> Sent: Thursday, November 10, 2016 12:52 PM > >> To: af@afmug.com <mailto:af@afmug.com <af@afmug.com>> > >> Subject: [AFMUG] Facebook achieves 20Gbps data rate over radio > >>spectrum > >> > >> > >>https://thestack.com/cloud/2016/11/10/facebook-achieves- > 20gbps-data-rate- > >>over-radio-spectrum/ > >> > >><https://thestack.com/cloud/2016/11/10/facebook-achieves- > 20gbps-data-rate > >>-over-radio-spectrum/> > >> > >
