It seems to me that something along the lines of what the RF elements horn antennas have could work... On Jul 1, 2016 10:27 PM, "George Skorup" <[email protected]> wrote:
> If they figure out how to put a waveguide interface on their > interchangeable/reversible diplexer design, they may have something. But > until then, it ain't waveguide, so I ain't buyin it. That simple. > > On 7/1/2016 10:13 PM, Chuck McCown wrote: > > The connectors may very well be designed such they will work at that > frequency, but the care that is taken when terminating cables with them and > the quality of the cable is every bit as important. UBNT ain’t exactly > known for high end stuff. (Sorry Chuck M). I am sure that if it is > critical to the success of the product, they will make it work. But > really, why waste time speculating. Time will tell. > > *From:* Josh Reynolds <[email protected]> > *Sent:* Friday, July 01, 2016 8:23 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N > > > Let me clarify something, I'm not taking about comparing N to SMA, I'm > talking about verifying these high quality N connectors are suitable for > use in low to medium cost licensed backhaul links. > On Jul 1, 2016 9:12 PM, wrote: > >> I'm saying the same thing. Take the connector designed for it, thrown >> your opinion in the trash, and post the results. Repeat the test. Have >> someone else repeat the test. Scientific method. >> On Jul 1, 2016 9:10 PM, "Chuck McCown" <[email protected]> wrote: >> >>> Type N connectors are not in common use above 6 GHz. Believe me or >>> not. >>> >>> You wanna go above 6, there are plenty of other cheaper and better >>> connectors to use. N connector concentricity is not inherent to the design >>> of the connector. And concentricity is essential to good return loss. >>> >>> You send me an N connector cable. I will put it on a load and connect >>> it to a vector network analyzer with a smith chart on the screen. Will >>> record video. Then I will wiggle the cable and back off the connector a >>> bit you can see for yourself the dot (arc actually) wander all over the >>> place. The higher the frequency the more it becomes a wild line. >>> >>> Then I will do the same for SMA and you can see for yourself which one >>> is more stable. Opinions don’t matter. A dot is a dot, an arc is an arc >>> and a squiggly line is a squiggly line. >>> >>> *From:* Josh Reynolds <[email protected]> >>> *Sent:* Friday, July 01, 2016 7:53 PM >>> *To:* [email protected] >>> *Subject:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N >>> >>> >>> So, nothing personal by this... but if the connector is designed for it >>> (and has several versions by other manufacturers to boot), has been used >>> (and is still used) on testing equipment... I'm probably more inclined to >>> take their word for it over yours. >>> On Jul 1, 2016 7:58 PM, "Chuck McCown" <[email protected]> wrote: >>> >>>> IMHO, 6 GHz is the upper limit. >>>> >>>> *From:* Peter Kranz <[email protected]> >>>> *Sent:* Friday, July 01, 2016 5:22 PM >>>> *To:* [email protected] >>>> *Subject:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N >>>> >>>> >>>> “Originally, the connector was designed to carry signals at >>>> frequencies up to 1 GHz <https://en.wikipedia.org/wiki/GHz> in >>>> military applications, but today's common Type N easily handles frequencies >>>> up to 11 GHz. More recent precision enhancements to the design by Julius >>>> Botka at Hewlett Packard >>>> <https://en.wikipedia.org/wiki/Hewlett_Packard> have pushed this to 18 >>>> GHz.” >>>> >>>> >>>> >>>> http://inmet.apitech.com/inmet/micro-inmet-between-typen.cfm >>>> >>>> >>>> >>>> >>>> *Peter Kranz *www.UnwiredLtd.com <http://www.unwiredltd.com/> >>>> Desk: 510-868-1614 x100 >>>> Mobile: 510-207-0000 >>>> [email protected] >>>> >>>> >>>> >>>> *From:* Af [mailto:[email protected]] *On Behalf Of *Chuck McCown >>>> *Sent:* Thursday, June 30, 2016 3:24 PM >>>> *To:* [email protected] >>>> *Subject:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N >>>> >>>> >>>> >>>> Yeah, I think this is a case of somebody bowing their neck - a pissing >>>> contest between a boss and underlings at UBNT. >>>> >>>> >>>> >>>> *From:* Eric Kuhnke <[email protected]> >>>> >>>> *Sent:* Thursday, June 30, 2016 4:19 PM >>>> >>>> *To:* [email protected] >>>> >>>> *Subject:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N >>>> >>>> >>>> >>>> I have never in my life personally seen an N connector rated above 11 >>>> GHz. High-quality/expensive N connectors are used extensively in two way >>>> satellite - such as with 3.0 meter C-band Tx/Rx earth station dishes... >>>> But you only use N for the 50 ohm coax cables from the modem (indoors) to >>>> the electronics which lives directly attached to the waveguide/feed on the >>>> dish (Rx LNB and Tx SSPA/BUC). >>>> >>>> The coax is used between 1.2 to 1.8 GHz to communicate with the Tx and >>>> Rx electronics on the dish. A satellite LNB on the Rx side is basically a >>>> 10:1 ratio downconverter. >>>> >>>> Like so: >>>> http://beta.satcomresources.com/sca/images/NORS3120N_detail-3.jpg >>>> >>>> There's your single polarity waveguide interface on one side, N on the >>>> other. >>>> >>>> >>>> >>>> On Thu, Jun 30, 2016 at 6:49 AM, Chuck McCown <[email protected]> wrote: >>>> >>>> First of all, I have never seen an N connector rated above 11 GHz, and >>>> those are extra expensive. >>>> >>>> If there is an 18 GHz version, it will be even more expensive. >>>> >>>> >>>> >>>> This will not be a cable you can make yourself in the field and it will >>>> be very sensitive to being fully seated so you will probably have to use a >>>> torque wrench to make it work at 18 GHz. >>>> >>>> >>>> >>>> Silly. You can weatherproof an SMA just as easy as an N connector. >>>> Good heatshrink can be found for both. >>>> >>>> Folks trying to use N connectors at 18 GHz are going to quickly get >>>> introduced to the world of return loss problems. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> *Von:* Af [mailto:[email protected]] *Im Auftrag von *Rob Genovesi >>>> *Gesendet:* Donnerstag, 30. Juni 2016 01:32 >>>> *An:* [email protected] >>>> *Betreff:* Re: [AFMUG] Convert Andrew Dragonwave dishes to N >>>> >>>> >>>> >>>> From Gary-UBNT: >>>> >>>> "We are working on data sheets right now so hopefully you will get more >>>> questions answered shortly. The reason for N connectors relates to demand >>>> for higher mechanical robustness and the ability for the connectors to be >>>> weather-proof as a stand alone connector (fully weatherproof gaskets and >>>> the ability to accept larger diameter jumpers readily). The N connectors >>>> we use are rated to 18+ GHz." >>>> >>>> An active thread on the UBNT forums right now, more available here: >>>> http://community.ubnt.com/t5/airFiber/Some-AF11X-details/td-p/1512145 >>>> >>>> -Rob >>>> >>>> >>>> >>>> On Wed, Jun 29, 2016 at 12:05 PM, Bill Prince <[email protected]> >>>> wrote: >>>> >>>> I'm looking at all the other AF-nnX radios from UBNT, and they all use >>>> SMA connectors. What reason would they have to use N instead of SMA? Seems >>>> the SMA connector would have fewer issues at 11 GHz. >>>> >>>> >>>> >>>> >>>> >>> >
