I have used a very thick non migrating silicone vacuum grease on the UHF connectors in the past to waterproof them. I put some on the threads and on the rear of the center section that the barrel pushes against. They have been up at 40 feet in all kinds of weather for 30 years with no problems. I considered tape, etc. but it seemed that if some water got in, it would have difficulty getting out. Better to not provide a container for water.
Jack BMW Motorcycles Chuck KE9UW c-haw...@illinois.edu Sent from my iPad > On Jun 3, 2020, at 2:50 PM, Buck <radiok...@gmail.com> wrote: > > Electrical tape, then the self-fusing tape, then electrical tape. The first > layer of electrical tape makes it easier to removing the fusing tape later > > Buck, k4ia > Honor Roll > 8BDXCC > EasyWayHamBooks.com > >> On 6/3/2020 12:58 PM, Clay Autery wrote: >> I've got to get to class, but there are a NUMBER of different methods and >> procedures that are used. >> Self-fusing tape properly applied covered by top-quality electrical tape to >> protect the self-fusing tape from UV... >> There are specific points on installation that you want to observe. >> Someone will chime in with deatil or a reference to a procedure... If not, >> I will do it later... Class in 3 minutes. >> 73, >> ______________________ >> Clay Autery, KY5G >> (318) 518-1389 >>> On 06/03/20 10:35, Peter Dougherty wrote: >>> No, and I wasn't sure how to accomplish this. It's stainless hardware, but >>> I'm guessing I should probably wrap the feedpoint up in self-annealing tape >>> and Scotch 88 just to be safe. >>> >>> - pjd >>> >>> -----Original Message----- >>> From: elecraft-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On >>> Behalf Of Dave Cole >>> Sent: Wednesday, June 3, 2020 7:27 AM >>> To: elecraft@mailman.qth.net >>> Subject: Re: [Elecraft] FIXED--was NOT the feedline >>> >>> Hi, >>> >>> Is the open end of that feedline where it connects to the antenna >>> weatherproofed? >>> >>> 73, and thanks, >>> Dave (NK7Z) >>> https://www.nk7z.net >>> ARRL Volunteer Examiner >>> ARRL Technical Specialist >>> ARRL Asst. Director, NW Division, Technical Resources >>> >>> On 6/2/20 8:15 PM, Peter Dougherty wrote: >>>> HI all, >>>> >>>> A postscript to the problem. First off, a huge thank you to the many >>> replies received. I was fortunate that the problem was not in the KPA-1500 >>> as I'd originally feared. >>>> Much troubleshooting within the past few days. Originally the amp was >>> "iffy" on the old M-squared 6m5, and problematic (faulting) during damp or >>> wet weather. This prompted the replacement of both the antenna and feedline. >>>> The hard faults were still occurring, until it was suggested the Ten-Tec >>> 238 tuner that I was using exclusively for the built-in antenna switch was >>> now the issue. I took this out of line today, and lowered the tower to >>> fine-tune the LFA's feed point and now everything is humming along just >>> nicely. The KPA-1500 is happy at 1.5 kW and showing an SWR of 1.2 in dry >>> conditions. I will keep my fingers crossed that the wet weather expected in >>> the next day or so won't bother it all that much. >>>> The final step was to move the 6m feedline from the secondary inlet box to >>> the main antenna switch on the big tower. The downside here is I now have an >>> additional 70 feet of BuryFlex in the line, so I'm guessing a total of about >>> 1.5 to 1.7dB of feedline loss. This is something I would like to address in >>> the future with an eye to dropping it below 1dB. >>>> Screencaps: >>>> https://www.dropbox.com/s/1y4vyd17pbgq8ty/6m%20via%20the%20antenna%20s >>>> witch.png?dl=0 >>>> >>>> And >>>> >>>> https://www.dropbox.com/s/5x8n0bum4nwcxqp/6m%20LFA%20-%20SWR%20after%2 >>>> 0tuning.png?dl=0 >>>> >>>> And for the balun discussion, this is what's in place, before the >>>> double-walled heat-shrink was applied: >>>> https://www.dropbox.com/s/18pgthl67rtq3bl/2020-05-31%2017.51.08.jpg?dl >>>> =0 >>>> >>>> - pjd >>>> >>>> ______________________________________________________________ >>>> 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 >>>> d...@nk7z.net >>>> >>> ______________________________________________________________ >>> 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 li...@w2irt.net >>> >>> ______________________________________________________________ >>> 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 k...@montac.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 radiok...@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 c-haw...@illinois.edu ______________________________________________________________ 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
