Hi Hal, No, not as far as I know, and it is only intended to happen for a short (stub mast) distancce. The method I would use is to cable cleat two or three pieces of cord (use two or three cleats "in series" over 2 or 3 inches of jacket) on the jacket/sheath before dropping the cable down the tube. Support the weight of the cable on these....it will depend on your fixings etc....you may need to drill small exit holes or slots for the cord exit. Fasten the cords to take the weight, keeping the strain off the N-type brain clamp. Messy but essential.
The used of adhesive shrink-sleeeving on the N-type body and the sheath my also give some extra support. The sheath and braid will stretch inder the weight whereas the inner and inner dielectic will not, this is what causes the pin whidrawal. I believe. How much cable will a connector support??....none in my opinion!! The creep will just take longer! Practically maybe a couple of feet, it depends on the stiffness of the sheath material. Another thought is that if you are using heavy cable like RG-8, force it back up the mast an tie-wap it at the bottom as well. This wont work with RG-58 though. Richard, crimp connetxors dont solve the problem either because the weight is supported on the braid. They need adhesive shrink as well to provide jacket to connector-body support even in normal applications. I have repaired a lot of crimp connector systems that have failed this way, just under flexing and not any weight. I think it is what gives the system a bad name in some quarters. Alan G3NYK. ----- Original Message ----- From: "Hal Murray" <hmur...@megapathdsl.net> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Sunday, March 01, 2009 11:50 PM Subject: Re: [time-nuts] GPS antenna installation problem > > > Take the cable down and remake it, add strain relief, and all will > > probably be well. > > Is there a standard trick for how to do the strain relief when the antenna is > setup to have the cable go up the inside of the mounting pipe? > > --------- > > Thanks everybody for all the roof/antenna hints from a week ago. > > > -- > These are my opinions, not necessarily my employer's. I hate spam. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.