My theory is that the AF11FX "40 MHz" channel used in the previous example I posted is actually something like 33 or 34 MHz wide if you look at it on a $15,000 bench test spectrum analyzer.
On Thu, May 25, 2017 at 7:17 PM, Mathew Howard <mhoward...@gmail.com> wrote: > It is significantly worse... Look at the spec sheets. Our old SAF Lumina > can do 366mbps in a single polarity 256qam 56mhz channel... an AF11 doesn't > even match that running at 1024qam - it will theoretically do somewhere > around 340mbps at 1024qam and somewhere around 275mbps at 256qam. > > On May 25, 2017 9:06 PM, "Eric Kuhnke" <eric.kuh...@gmail.com> wrote: > >> If all you can get on a particular path is a theoretical single 40 MHz >> wide FDD channel pair, one polarity, I don't see how the 1024QAM bps/Hz >> efficiency would be significantly worse than a competing single polarity >> product (SAF Integra, etc) running in the same channel size. Unless you are >> counting more expensive competing products that advertise header >> compression and very different Mbps rates for 64-byte vs much larger packet >> sizes. >> >> It's very cost effective so I will forgive it many things, my main >> problem is that it can't actually *use* near the full width of an 80 MHz >> channel. >> >> On Thu, May 25, 2017 at 6:26 PM, George Skorup <george.sko...@cbcast.com> >> wrote: >> >>> Yeah. Cost is one thing, but if all you can get is a single polarity on >>> a particular path, the AF11 is probably one of the last things I'd look at. >>> Congestion is a problem around here. >>> >>> >>> On 5/25/2017 8:21 PM, Seth Mattinen wrote: >>> >>>> On 5/25/17 18:12, Mathew Howard wrote: >>>> >>>>> >>>>> We're running the full 56mhz/MIMO... I haven't been able to get them >>>>> to run at 1024qam yet (antennas still need to be fine tuned, it wasn't >>>>> ideal weather conditions when we put them up, so I'm hoping we'll be able >>>>> to get a bit more out them), so they're only at around 550Mbps capacity >>>>> (and I've verified the link will do around 500Mbps with real traffic). >>>>> >>>>> >>>> >>>> Only 500 meg with two channels? Crap, I have an old Exalt that can do >>>> that with only one channel at 256QAM. >>>> >>> >>> >>
