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 Sent: Thursday, June 30, 2016 4:19 PM To: af@afmug.com 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 <ch...@wbmfg.com> 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:af-boun...@afmug.com] Im Auftrag von Rob Genovesi Gesendet: Donnerstag, 30. Juni 2016 01:32 An: af@afmug.com 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 <part15...@gmail.com> 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.
