They definitely do, just have never laid eyes on one in person. The only possible purpose I could think of would be something like a expensive portable spectrum analyzer (900 to 18GHz+) adapter cable set that needs to have the widest possible range of input frequencies.
There are all sorts of weird things if you search enough, I have even seen N connectors designed specifically for 75 ohm, in rare applications where people have decided that 75 ohm type F and RG6 Quad shield cable is not good enough in dB loss per meter. On Thu, Jun 30, 2016 at 3:43 PM, Chuck McCown <[email protected]> wrote: > I guess they do exist: > http://www.santron.com/Type-N-coaxial-connector/ > > *From:* Chuck McCown <[email protected]> > *Sent:* Thursday, June 30, 2016 4:23 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. >> >> >> >> >
