That's a problem of the OOBE issue. Regards, Chuck
On Tue, Mar 10, 2015 at 1:30 PM, Bill Prince <[email protected]> wrote: > I also wonder with MIMO systems why the V/H or -45/+45 polarities are not > considered separate transmitters (because they are). In which case each > one should be allowed up to the limit? > > AND... What allows UBNT to transmit at up to 27 dbm, yet PMP450 is limited > to 22 dbm? What's different there that I don't understand? 5 dbm is a > bunch in my book. Is it OOB that is the issue here? > > bp > <part15sbs{at}gmail{dot}com> > > > On 3/10/2015 10:23 AM, Ken Hohhof wrote: > > Personally I also feel there is a flaw in the way EIRP is regulated on > FHSS systems. The limit in 900 MHz is on total EIRP, not power spectral > density. Somehow the FCC feels it is OK to concentrate 4 watts in one > narrow hopping sub-channel as long as the dwell time isn’t too long. > That’s like saying you can use a magnifying glass to concentrate sunlight > on a single ant and it won’t hurt the ant as long as you move it to a > different ant every second. No, you end up with a bunch of smoking ant > carcasses on the sidewalk. > > Also the smartgrid mesh networks seem to violate the spirit of the > requirement that you can’t get around the EIRP limit by using multiple > transmitters to send the same data, for example in a MIMO system. > > > *From:* Jeremy Grip <[email protected]> > *Sent:* Tuesday, March 10, 2015 12:10 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] More LTE tradgedy of the commons on 5 GHz.. > > > +1 > > > > *From:* Af [mailto:[email protected] <[email protected]>] *On > Behalf Of *Peter Kranz > *Sent:* Tuesday, March 03, 2015 12:02 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] More LTE tradgedy of the commons on 5 GHz.. > > > > I think the point some are missing is the lesson learned from 900Mhz and > smart meters. > > > > While 900Mhz is unlicensed spectrum, a single operator has managed to take > it over in California to the point where no other user has any chance of > using the spectrum for commercial purposes. > > > > By this I mean that PG&E’s deployment of smart meters on every power meter > in the area, and on top of power poles, and other high sites, has raised > the noise floor on this band to unusable levels for high speed > communications. > > > > So by means of overwhelming numbers, PG&E managed to take over 900Mhz for > its own users, stranding the investment of ISPs in this spectrum in > affected markets. I don’t think the commissions initial concept of > unlicensed spectrum was that a single operator would do this, I think they > expected operators by this to use licensed spectrum. > > > > I’d like to see a limit on how many systems a particular entity can deploy > in an unlicensed band. It could be some high number, like 1 million units. > > > > > *Peter Kranz *Founder/CEO - Unwired Ltd > www.UnwiredLtd.com <http://www.unwiredltd.com/> > Desk: 510-868-1614 x100 > Mobile: 510-207-0000 > [email protected] > > >
