Thanks... and if I missed a response from the OP, thank as well. Well then... that seems to vindicate my desire to avoid CCS wire and "overengineer" with the use of larger wire diameters. And it clues me in to pay attention to every single detail when designing a transmission line system.
Thanks again... 73, ______________________ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 2/1/2017 6:25 AM, John Oppenheimer wrote: > Wireman 553 uses a 19 strand Copper Clad Steal (CCS) conductor which > results with very thin copper cladding. 553 is skin saturated at about > 15 MHz. The loss at 1.8 MHz is approximately 0.21 dB per 100 feet. > > http://www.kn5l.net/wm553/ > > Using EZNEC and SimSmith for the antenna below results with 13.8 dB > transmission line loss. Slightly greater loss then Wes' calculations. > > John KN5L > > On 01/31/2017 04:12 PM, Wes Stewart wrote: >> A 130' dipole, 60' high on 160 has a feed point Z of ~4.5 -j1200. One >> hundred >> feet of Wireman 553 (typical ladderline) will transform this to ~7.5 +j16 at >> the >> input. The total loss in this "low-loss" line is over 12 dB. > ______________________________________________________________ > 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]
