FB Don. Since you were responding to a threat specifically about the K3EXREF SMA I didn't want anyone to think that your comments applied in that case.
I, too, usually put a male connector on a female panel mount BNC to hold it while I tighten the inside nut. The SMA in question doesn't work like that. Why those connectors failed is a mystery. I forwarded the info to support so the engineers can do a little head scratching over it, Hi! 73 Ron AC7AC -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Don Wilhelm Sent: Saturday, April 2, 2016 4:51 PM To: Ron D'Eau Claire; 'Mike Cox'; [email protected] Subject: Re: [Elecraft] KE: issue with installation of K3EXREF interface Ron, OK on the SMA connectors. I have seen several types. Some are similar the the BNC chassis mount while others have a "nut" on the outside that one can grasp with a wrench (and makes my suggestion of screwing on a mating connector a moot point). I do believe my points about using a male connector to provide something for pliers to grasp as well as the star lockwasher placement are valid points for the chassis mount BNC as well as for *some* SMA connector applications. I did not check the exact SMA connector for the K3/S EXT REF SMA connector before responding, and it has been a while since I have installed one. My comments were general and apply only to those BNC and SMA connectors that fasten directly to the chassis. 73, Don W3FPR On 4/2/2016 7:33 PM, Ron D'Eau Claire wrote: > Don, in this case the lock washer would jam into the opening for the > connector. If you look at the setup in the manual you'll see that > panel hole is oversized and the engineers put an o-ring on the > connector that centers it in the hole. The inside surface of the panel > is masked to provide good contact with a large flat washer that goes > against the rear panel opening and provides a good surface for the nut > and lock washer that secures the connector to bear against. > > The connector has a hex cut on the inside ferrule. Tightening is done > with a wrench or pliers on the nut outside while holding the hex cut > ferrule on the inside to keep it from turning. > > 73, Ron AC7AC > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
