I'm talking 706 FT, give or take 6 inches On Wed, Aug 10, 2016 at 11:52 AM, Eric Kuhnke <[email protected]> wrote:
> Depends on your distance, if you're going 1 km vs. 2.5 to 4 km.... > > It is definitely a VERY narrow beam width. Particularly with 60cm > antennas. I wouldn't do it on anything that sways. > > > > On Wed, Aug 10, 2016 at 6:07 AM, Joe Novak <[email protected]> wrote: > >> How stable of a structure do you need for 70/80Ghz? Self standing rohn 45 >> @ 55 ft too much? It's bracketed at 25ft. >> >> On Wed, Aug 10, 2016 at 7:02 AM, Kurt Fankhauser < >> [email protected]> wrote: >> >>> What price range is a Huawei link in? >>> >>> On Wed, Aug 10, 2016 at 2:47 AM, Eric Kuhnke <[email protected]> >>> wrote: >>> >>>> You cannot directly compare 11 to 80 GHz. Totally different market. I >>>> can't do beyond 2.5 km at real five to six nines uptime with 80 GHz (even >>>> with +18 Tx power radios). >>>> >>>> I can do 60 km with 11 if the link will tolerate some ACM. >>>> >>>> On Aug 9, 2016 9:31 PM, "John Blake" <[email protected]> wrote: >>>> >>>>> It's obviously pricier than the B11, but if you want true symmetrical >>>>> and a ton of throughput, you could look at the Huawei RTN-380 radios. >>>>> These will do 4Gbps (2Gbps symmetrical) at full licensing, or there are 1, >>>>> 2, 3Gbps licensing options. They use 71-76 GHz and 81-86 GHz and so are >>>>> super easy and cheap to get (lightly) licensed. These are very popular >>>>> with >>>>> carriers outside the US, but not so much in the US because of all the >>>>> Huawei/Ciscolobby disputes, but that has largely been resolved and they >>>>> have been getting traction here. Let me know if you want more info, we >>>>> are >>>>> Huawei VAR. >>>>> >>>>> John >>>>> >>>>> >>>>> On Wed, Aug 3, 2016 at 9:54 PM, <[email protected]> wrote: >>>>> >>>>>> Gino, >>>>>> >>>>>> That seems to be the only configuration that meets the requirement. >>>>>> The way I see it, in a traditional FDD system you would license an XPIC >>>>>> pair of frequencies, say 11075 H/V at point A and 11565 H/V at point B. >>>>>> Assuming an 820 running 256QAM you might get 500mbps per polarity per >>>>>> direction, for a two-way aggregate of 2gpbs. You would have licensed >>>>>> 160MHz at each end of the system, for a system efficiency of >>>>>> 2gbps/320MHz = >>>>>> 6 b/s/hz. >>>>>> If you operate a B11 on the same pair of frequencies, you have to use >>>>>> their FD mode which a typical PCN claims will deliver 736mbps. It would >>>>>> seem that this can be viewed as a two-way aggregate rate, because the >>>>>> radios still take turns transmitting as in a true TDMA system. So, the >>>>>> system efficiency here is 736mbps/320MHz = 2.3 b/s/hz -- below the >>>>>> requirement of 3 b/s/hz. >>>>>> >>>>>> If you switch the B11 to the normal TDMA mode you will need to >>>>>> transmit on the same frequency from each end of the link. So, in >>>>>> addition >>>>>> to licensing 11075 H and V transmitting from point A, you also need to >>>>>> license 11075 H and V transmitting from point B, which adds another >>>>>> 160MHz >>>>>> at each end. The PCNs show this configuration giving 1.47gbps (again >>>>>> assumed to be an aggregate figure due to the TDMA mode). This is an >>>>>> efficiency of 1.47gbps/640MHz = 2.3 b/s/hz again. However, because you >>>>>> have licensed two frequency pairs, each site can also transmit and >>>>>> receive >>>>>> on the unused 11565 H and V frequencies. If you do this then you get >>>>>> 2*1.47gbps/640MHz = 4.6 b/s/hz. This seems to be the only valid >>>>>> configuration, but does this take two radios at each end, or just one? >>>>>> >>>>>> Mike Black >>>>>> >>>>>> Black & Associates >>>>>> >>>>>> 727-773-9016 >>>>>> >>>>>> >>>>>> ---------------------------- Original Message >>>>>> ---------------------------- >>>>>> Subject: Re: [AFMUG] B11 >>>>>> From: "Gino Villarini" <[email protected]> >>>>>> Date: Wed, August 3, 2016 3:38 pm >>>>>> To: "Animal Farm" <[email protected]> >>>>>> ------------------------------------------------------------ >>>>>> -------------- >>>>>> >>>>>> >>>>>> > but the radio tx in both channels in the both polarites in both >>>>>> ends ... >>>>>> > >>>>>> > On Wed, Aug 3, 2016 at 1:31 PM, Eric Kuhnke <[email protected]> >>>>>> wrote: >>>>>> > >>>>>> >> No, it is just as spectrally efficient as any 256QAM radio... One >>>>>> 80 MHz >>>>>> >> "low" channel in both polarities and one 80 MHz "high" channel in >>>>>> both >>>>>> >> polarities, as a typical FDD band plan such as you would use with a >>>>>> >> configuration with 2 dishes, 2 orthomode transducers and 4 radio >>>>>> heads >>>>>> >> (each radio operating in a single polarity) in a 2+0 configuration. >>>>>> >> >>>>>> >> You're arriving at the figure of 320 MHz by counting everything >>>>>> twice. >>>>>> >> >>>>>> >> On Wed, Aug 3, 2016 at 10:28 AM, <[email protected]> wrote: >>>>>> >> >>>>>> >>> We haven't had the pleasure of coordinating a B11 link yet, but >>>>>> they >>>>>> >>> certainly seem to be popular based upon the number of PCNs we are >>>>>> >>> seeing. So, a dumb question hopefully based upon a simple >>>>>> misunderstanding >>>>>> >>> of the numbers: I don't see how this meets the FCC minimum >>>>>> efficiency >>>>>> >>> standards for wide channels at 11GHz: >>>>>> >>> >>>>>> >>> 80MHz channels x H and V = 160MHz, but with high/low pairing you >>>>>> double >>>>>> >>> this? to 320MHz occupied per end? So, to meet the 3 b/s/hz >>>>>> requirement at >>>>>> >>> 11GHz your symmetrical throughput would need to be >= 960mbps. >>>>>> What am I >>>>>> >>> missing? >>>>>> >>> >>>>>> >>> Mike Black >>>>>> >>> >>>>>> >>> Black & Associates >>>>>> >>> >>>>>> >>> 727-773-9016 >>>>>> >>> >>>>>> >>> >>>>>> >>> ---------------------------- Original Message >>>>>> ---------------------------- >>>>>> >>> Subject: Re: [AFMUG] B11 >>>>>> >>> >>>>>> From: "Jaime Fink" <[email protected]> >>>>>> >>> Date: Tue, August 2, 2016 4:49 pm >>>>>> >>> To: "SmarterBroadband" <[email protected]> >>>>>> >>> "[email protected]" <[email protected]> >>>>>> >>> ------------------------------------------------------------ >>>>>> -------------- >>>>>> >>> >>>>>> >>> > The PHY is 1733 Mbps aggregate, so depending on the chosen >>>>>> window >>>>>> >>> sizes, the top real world TCP speeds we’ve seen are between >>>>>> 1200-1300 Mbps >>>>>> >>> aggregate (75/25 or 50/50 mode), or 600-650 Mbps symmetric >>>>>> (50/50). >>>>>> >>> > >>>>>> >>> > For 11 GHz this assumes high/low pairing of 80 MHz and both >>>>>> >>> polarizations coordinated. >>>>>> >>> > >>>>>> >>> > Jaime Fink • Mimosa<http://www.mimosa.co> • CPO & Co-Founder >>>>>> >>> > >>>>>> >>> > >>>>>> >>> > On August 2, 2016 at 1:34:31 PM, SmarterBroadband ( >>>>>> >>> [email protected]<mailto:[email protected]>) >>>>>> wrote: >>>>>> >>> > Can the B11 do 1Gbps Symmetrical? >>>>>> >>> > If not what is best Symmetrical? >>>>>> >>> > Thanks >>>>>> >>> > >>>>>> >>> > >>>>>> >>> > >>>>>> >>> >>>>>> >> >>>>>> >> >>>>>> > >>>>>> >>>>>> >>>>> >>> >> >
