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21. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: George Fremin III <geoiii@kkn.net>; Date: Thu, 17 Oct 2013 10:49:01 -0700; http://www.google.com/patents/US4763087 -- George Fremin III - K5TR geoiii@kkn.net http://www.kkn.net/~k5tr _________________ Topband Reflector; /archives//html/Topband/2013-10/msg00115.html (9,977 bytes)
22. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Charlie Cunningham" <charlie-cunningham@nc.rr.com>; Date: Thu, 17 Oct 2013 13:55:46 -0400; I expect that needs to be a good quality and seriously heavy duty switch that's used to vary the configuration of the matching network - at least at full power! Thanks, Tom! Charlie, K4OTV wants to s; /archives//html/Topband/2013-10/msg00116.html (10,716 bytes)
23. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: W9UCW@aol.com; Date: Thu, 17 Oct 2013 17:19:05 -0400 (EDT); I find that this simulator demonstrates what several of you are saying in a very comprehensive way. http://fermi.la.asu.edu/w9cf/tuner/tuner.html 73, Barry _________________ Topband Reflector; /archives//html/Topband/2013-10/msg00117.html (7,773 bytes)
24. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: Doug Grant <dougk1dg@gmail.com>; Date: Thu, 17 Oct 2013 19:16:00 -0400; The relevant patent appears to be 4,763,087 dated August 9, 1988. You can find the full patent text and images at www.uspto.gov and search for the patent number. I think patents expire 17 years from; /archives//html/Topband/2013-10/msg00118.html (8,313 bytes)
25. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: Jim GM <jim.gmforum@gmail.com>; Date: Fri, 18 Oct 2013 13:47:07 -0500; That tuner is capable of all those combinations? http://www.freepatentsonline.com/4763087.pdf That is just a work of art. You can switch this to any combination or add caps or inductance. Looks to me; /archives//html/Topband/2013-10/msg00121.html (8,957 bytes)
26. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Fri, 18 Oct 2013 16:15:42 -0400; That tuner is capable of all those combinations? http://www.freepatentsonline.com/4763087.pdf No. It only has the T network configuration. Nothing else. The T network is reversable, which it has to b; /archives//html/Topband/2013-10/msg00123.html (9,492 bytes)
27. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: Jim GM <jim.gmforum@gmail.com>; Date: Sat, 19 Oct 2013 10:23:03 -0500; I understand least amount of inductance. I can email a Power Point file of what I have. if any one is interested. Just ignore my notes. They just remind me what I have done so I do not do over again.; /archives//html/Topband/2013-10/msg00130.html (8,848 bytes)
28. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sat, 19 Oct 2013 11:44:22 -0400; "These transmatches these days T matches just do not have the balls for 160M running power." They do if the tuner's complex load Z is reasonable.> "I melted down a MFJ 998RT arced plates on an MFJ 98; /archives//html/Topband/2013-10/msg00134.html (9,847 bytes)
29. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Sat, 19 Oct 2013 11:52:06 -0400; Not sure what happened to the text formatting but let's try this again... "These transmatches these days T matches just do not have the balls for 160M running power." They do if the tuner's complex l; /archives//html/Topband/2013-10/msg00135.html (12,323 bytes)
30. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Bill Aycock" <billaycock@centurytel.net>; Date: Sat, 19 Oct 2013 10:56:36 -0500; Jim-- It sounds like you are just shooting in the dark and hoping for a hit. Are you measuring anything? Remind me-- what is your antenna? Bill--W4BSG I understand least amount of inductance. I can e; /archives//html/Topband/2013-10/msg00138.html (9,282 bytes)
31. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sat, 19 Oct 2013 21:37:48 -0400; I am not getting multiple minimum SWR points.` That doesn't mean anything. If I move the external capacitance in between the 2 external inductors I can run 500 watts with out an arc over. The antenna; /archives//html/Topband/2013-10/msg00153.html (11,580 bytes)
32. Re: Topband: W8ji ATR-10 design 160M? (score: 1): Author: Jim GM <jim.gmforum@gmail.com>; Date: Sun, 20 Oct 2013 11:49:11 -0500; What is the real or best guess what value this inductor has? This is what I am using. Edge wound coil is 1/2 inch wide, 1/32 inch thick stock, coil is 2 1/2 inches long,15 turns, 4.5 ID, 5.5 OD trans; /archives//html/Topband/2013-10/msg00166.html (8,492 bytes)

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