Jim, Take a look at the photos of my EXREF installation: http://www.kl7uw.com/K3EXREF.htm
in particular the sma cable in photo one showing components of the kit, and the photo at the bottom showing it installed in the radio (case off). You can see the brass compression ferrule. That holds the shield of the coax in contact to the connector so with it broken off you may not have a good RF ground connection with the coax. That would result in 10-MHz not reaching the EXREF board at high enough level. Pretty much the same effect as not having the sma connector threaded on tight enough.
Why the ferrule broke could be either you overtightened the nut holding the sma connector to the back panel or more likely the cable twisted while trying to tighten the nut. How did you hold the back of the connector when installing the nut?
You probably need to replace the cable assy but talk with Elecraft first. 73, Ed - KL7UW PS: sorry the other photos are blurry. ------------------------- From: "Jim Spears" <n...@cox.net> To: <elecraft@mailman.qth.net> Subject: [Elecraft] KE: issue with installation of K3EXREF interface While installing the K3EXREF SMA-TMP cable, I ran into an interesting issue which I do not yet know if it is a problem or just interesting. There is a ferrule or something similar over the cable where it attaches to the SMA fitting that is installed on the back panel. while tightening the hex nut down, I must have torqued something as the ferrule broke into two pieces and fell off. I finished off the installation and verified that the GPSDO does provide a suitable 10 MHz signal into the radio. So the question becomes: is this interesting or a problem? I took a close look and the problem might be improper grounding of the shield to the chassis at the SMA connector end. If it is deemed to be a potential problem, I can request a new cable from support. It will not take long to replace the cable. Jim/N1NK 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
