You would need dual carrier, because I'm talking about using the single
core Aviat radios, to keep it as cheap as possible. An AF11 link can
typically do ~700M one direction (using both polarities), which is about
the same as each 80mhz channel on an Aviat.
On Sun, Jan 19, 2020, 1:36 PM Ken Hohhof <af...@kwisp.com> wrote:
> I would also run link performance analysis on both approaches. Or at
> least consider 2 antennas instead of splitters with the airFiber approach.
>
>
>
> If I take one of my Cambium CCDP (XPIC) links and change it to ACCP in
> LinkPlanner, it knocks 9 dB out of the system gain. I assume due to the
> additional loss of the splitters instead of OMTs. And with AF11X radios
> compared to something like Aviat you are already starting out with lower
> system gain. At least with separate antennas you don’t need the splitters.
>
>
>
> I’m also not seeing why you would need dual carrier on Aviat to match the
> throughput of two AF11X radios, just make sure you are comparing apples to
> apples. In other words, full duplex capacity, not aggregate. Maybe I’m
> not familiar enough with the Ubiquiti and Aviat radios, but it seems to me
> the appropriate cost comparison would be 2 x AF11X vs 1 x single carrier
> Aviat.
>
>
>
>
>
> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Mathew Howard
> *Sent:* Sunday, January 19, 2020 1:08 PM
> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com>
> *Subject:* Re: [AFMUG] 11 ghz combiner
>
>
>
> I don't see how it can be a lot cheaper. Ignoring potential differences in
> licensing/coordination, last I checked a complete AF11 link with all the
> parts is somewhere in the neighborhood of $3k (for the hardware only). It
> looks to me like I can get an Aviat WTM 4100 with dual carrier enabled for
> a bit over $7k total. I'm assuming that I'm going to be able to license
> adjacent channels on the same polarity on most paths that I can license two
> full AF11 links, and that's going to yield similar capacity.
>
> To me, it seems well worth the difference in price to get better radios
> and not have to deal with an extra set of dishes. Granted, having two sets
> of radios does give you a redundancy advantage, but I'd still rather have
> better radios.
>
>
>
> On Sun, Jan 19, 2020 at 11:00 AM Matt Hoppes <
> mattli...@rivervalleyinternet.net> wrote:
>
> Two 11x even with two dishes is still cheaper than an Aviat. I see the
> Aviat being an option when we crest 1.4 gigabit. Until then my dual 11x
> setup is much less expensive.
>
> > On Jan 19, 2020, at 11:15 AM, Ken Hohhof <af...@kwisp.com> wrote:
> >
> > Maybe we should ask what you are trying to accomplish. Is it more
> capacity, or something else?
> >
> > Because if it's more capacity, you will take such a hit on price and
> performance using 2 radios and combiners that you'd be better off with one
> more conventional radio. You shouldn't even have to buy a dual core radio
> to get approx. double the throughput of an AF11x. Start with the lower
> throughput and lower system gain of the AF11X, lose I think someone said ~7
> dB for combiners, pay for 2 radios and combiners, then need external LAG.
> It's a Rube Goldberg if you're just trying to get ~1.5 Gbps full duplex
> capacity, just buy one of the alternatives that people have suggested like
> Aviat. Or if money isn't a big issue and you want to license both
> polarizations (which I believe you need to do for the AF11X), then buy a
> true dual core radio with an OMT and have tons of capacity for the future.
> Either way, feel good that you're making efficient use of spectrum.
> >
> > If capacity isn't the objective, maybe some more info.
> >
> > If money is the main issue, yes the AF11X is very affordable, but not if
> you have to use 2 of them and some outboard stuff to do what other vendors
> can do with one radio.
> >
> >
> > -----Original Message-----
> > From: AF <af-boun...@af.afmug.com> On Behalf Of ch...@wbmfg.com
> > Sent: Sunday, January 19, 2020 8:33 AM
> > To: AnimalFarm Microwave Users Group <af@af.afmug.com>
> > Subject: Re: [AFMUG] 11 ghz combiner
> >
> > The problem is keeping one transmitter out of the other. So you have
> hybrid combiners and circulators. Those are the only methods I know. You
> can get both at 11 GHz with waveguide or SMA connectors.
> >
> > -----Original Message-----
> > From: Mark Radabaugh
> > Sent: Sunday, January 19, 2020 7:06 AM
> > To: AnimalFarm Microwave Users Group
> > Subject: Re: [AFMUG] 11 ghz combiner
> >
> > This is usually done using wave guides rather than at the electrical
> level due to the high losses that occur when trying to do it using
> transmission
> > lines. It’s a pretty complex piece of waveguide design - not something
> you
> > can cobble together. The vendors with full product lines in the
> microwave
> > backhaul market have these solutions already designed and available.
> >
> > Mark
> >
> >> On Jan 18, 2020, at 4:20 PM, Bill Prince <part15...@gmail.com> wrote:
> >>
> >> That would be a tall order. AF11 radios are two-pole already, and the
> >> diplexers have a N connector. if you had the right frequencies; maybe,
> >> but it is difficult for me to visualize.
> >>
> >> bp
> >> <part15sbs{at}gmail{dot}com>
> >>
> >>> On 1/18/2020 12:23 PM, Matt Hoppes wrote:
> >>> Does anyone know of a 10-12ghz combiner module?
> >>>
> >>> Example - I want to run two airFiber 11x radios on one dish.
> >>>
> >>
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