They are half duplex but since they can combine transmit on both 40MHz links, if the majority of your traffic is 1 direction, you end up with more bandwidth for the same QAM. And again, $2K. So if you can get 800Mbps links, and can deliver more than 400Mbps in one direction, I’m thinking that’s a pretty good value.
As for it being a glorified chipset, the Quantenna chipset was designed to move lots of data and has a boatload of computing power. And the next version is designed to move 10Gbps so I’m thinking Quantenna is a little more than a WiFi chip. Yea, it’s half-duplex but with 90% or more of my traffic moving 1 direction, who cares. Considering this entire link cost about $6500 for radios and antennas for a 50 mile shot, I’d say it’s a great value. Rory From: Af [mailto:af-boun...@afmug.com] On Behalf Of Mathew Howard Sent: Tuesday, November 8, 2016 12:08 PM To: af Subject: Re: [AFMUG] Class A and B antennas Yes, I'm fairly certain there isn't any way to use only one polarity. I'm pretty sure that would have to be aggregate - but, since they are half duplex radios, it should be able to do the full 480 either direction at any given time (just not both directions at once...) On Tue, Nov 8, 2016 at 11:50 AM, Eric Kuhnke <eric.kuh...@gmail.com<mailto:eric.kuh...@gmail.com>> wrote: Unless I am grossly mistaken a B11 always operates in both polarities no matter what channel size. On Tue, Nov 8, 2016 at 9:45 AM, Sean Heskett <af...@zirkel.us<mailto:af...@zirkel.us>> wrote: Rory is that 480Mbps aggregate or each direction. also is it both polarizations of a 40Mhz channel or one polarization? -sean On Tue, Nov 8, 2016 at 5:35 AM, Rory Conaway <r...@triadwireless.net<mailto:r...@triadwireless.net>> wrote: And availability. The B11’s were available almost a year ago. Here is another thing, the B11’s can get up to 480Mbps of real throughput in a 40MHz channel. Rory From: Af [mailto:af-boun...@afmug.com<mailto:af-boun...@afmug.com>] On Behalf Of Josh Reynolds Sent: Tuesday, November 8, 2016 5:05 AM To: af@afmug.com<mailto:af@afmug.com> Subject: Re: [AFMUG] Class A and B antennas Just $1,200+ more per end than an AF11x. You could buy a pair of Cisco SFPs for that savings! At list price! ;) (Yes, I understand business case vs product cost, just ribbing you a bit.] On Nov 8, 2016 6:00 AM, "Mike Hammett" <af...@ics-il.net<mailto:af...@ics-il.net>> wrote: I haven't bought B11s, just while scouting for options, I *COULD* do B11s. I could also swap them out later for something else like an AlfoPlus2. Why would I do a B11? Cheapest 11 GHz link with an SFP. ----- Mike Hammett Intelligent Computing Solutions<http://www.ics-il.com/> Midwest Internet Exchange The Brothers WISP <https://www.facebook.com/ICSIL> ________________________________ From: "Bill Prince" <part15...@gmail.com> To: af@afmug.com Sent: Monday, November 7, 2016 10:51:11 PM Subject: Re: [AFMUG] Class A and B antennas +1 Inquiring minds. bp <part15sbs{at}gmail{dot}com> On 11/7/2016 8:47 PM, Sean Heskett wrote: If you are in a congested RF environment why on earth would you waste the spectrum on a B11? It only does 256QAM On Mon, Nov 7, 2016 at 6:42 PM Mike Hammett <af...@ics-il.net> wrote: *nods* I asked about going from a 3' to a 6' SHP dish, no go. That said, I've got a couple paths in HFT central where I can still do B11s. :-) ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ________________________________ From: "George Skorup" <geo...@cbcast.com> To: af@afmug.com Sent: Monday, November 7, 2016 7:39:31 PM Subject: Re: [AFMUG] Class A and B antennas My finger clicked send before my brain. Interestingly, a RadioWaves HP2-11 has 60dB f/b ratio and is a Cat B. While a HP3-11 has 62dB f/b and is Cat A. The VHLP800-11 has 59dB f/b and is Cat A while being only 3" smaller in actual diameter vs the HP3-11 (35.5" for a "2.5" foot antenna, vs a 38.4" 3 foot). But a bit weaker f/b ratio than a HP2. Both are shrouded. I don't get it. I think there may be something else like main lobe beamwidth, too. The problem with all this Cat A vs B stuff is it really doesn't matter anymore in congested areas. I had Liz look for a 56MHz channel on a path. She said nope. I said, OK, what about changing the 2' end to a 3'. She still said nope. Polarity, antenna size, etc., nothing mattered. Out of channels is out of channels. Good luck with those funky B11's. On 11/7/2016 7:09 PM, Mike Hammett wrote: Yes. Not a size requirement, just a suppression requirement. It's just what size of antennas normally meet those requirements. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ________________________________ From: "George Skorup" <geo...@cbcast.com> To: af@afmug.com Sent: Monday, November 7, 2016 7:08:11 PM Subject: Re: [AFMUG] Class A and B antennas IIRC, the classes are about front to back radio and sidelobe suppression. On 11/7/2016 6:45 PM, Mike Hammett wrote: 2.6' in 11 GHz. I forget who. ----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ________________________________ From: "SmarterBroadband" <li...@smarterbroadband.com> To: af@afmug.com Sent: Monday, November 7, 2016 6:34:03 PM Subject: [AFMUG] Class A and B antennas Does anyone make a 2 foot Class A antenna for 11 GHz? Or is 3 foot the minimum. Does anyone make a 1 foot Class A antenna for 18 GHz? Or is 2 foot the minimum. Is there a minimum distance for a 11 GHz link? Thanks Adam
