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61. TopBand: new Inv-L (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 13 Sep 1998 18:20:00 -0400; Hi Scott, When I consider the present signal of WD4JRA (who's L may be a bit taller than that), or the past signal of K8KAS, K8GIJ and WB8QMC (both on city lots with very limited height) they obvious; /archives//html/Topband/1998-09/msg00081.html (7,045 bytes)
62. TopBand: Radials (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 14 Sep 1998 10:13:12 -0400; Hi Roger, What debate was that? If you have enough radials it doesn't make a bit of difference if they are buried or elevated, resonant or non-resonant. The only ill effect can be a reduction in effe; /archives//html/Topband/1998-09/msg00082.html (7,341 bytes)
63. TopBand: Re: Flag & Pennants (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 15 Sep 1998 08:41:57 -0400; Receiving antennas have different design goals from transmitting antennas. The main goal of most transmitting antenna systems is gain, with a receiving antenna it is directivity. Front to back ratio; /archives//html/Topband/1998-09/msg00094.html (8,293 bytes)
64. TopBand: Transformers for pennants and flags (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 15 Sep 1998 10:03:14 -0400; Hi Peter, What a well thought-out post with good analysis! I'm not quite ready to agree with the assumption common mode excitation directly relates to common mode impedance and feedline impedance, th; /archives//html/Topband/1998-09/msg00095.html (12,953 bytes)
65. TopBand: More on transformers (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 17 Sep 1998 09:43:23 -0400; Hi Peter and all, I'd like to clarify a few points. It would be better if we pictured the antenna differently. That is true ONLY IF we assume the Beverage has a PERFECT ground, but virtually all Beve; /archives//html/Topband/1998-09/msg00116.html (10,966 bytes)
66. TopBand: 2 wire beverages (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 17 Sep 1998 08:39:53 -0400; Hi Dave, funny John I've heard that before, but never found where they disagree. One seems to be a copy of the other. 1.) The center tap of the transformer at the feedpoint contains the common mode s; /archives//html/Topband/1998-09/msg00117.html (8,901 bytes)
67. TopBand: Folded dipoles on 160m (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 27 Sep 1998 06:41:19 -0400; Hi Steve, Thank's for the QSO's on 160, especially on days when the band is about dead. 1036Z and QSO's with ZL2REX (1015Z) and VK3ZL (0855Z and 1010Z). Waiting for you, hi. seems circuit build-up I'; /archives//html/Topband/1998-09/msg00190.html (8,046 bytes)
68. TopBand: Kh2/K4sxt (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sat, 01 Aug 1998 09:38:34 -0400; Worked him at 0945 on 1831. He was 579. Good signal. 73 Tom -- FAQ on WWW: http://www.contesting.com/topband.html Submissions: topband@contesting.com Administrative requests: topband-REQUEST@contest; /archives//html/Topband/1998-08/msg00013.html (6,605 bytes)
69. TopBand: Balloon (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 02 Aug 1998 00:08:31 -0400; -- To: <topband@contesting.com> Much lower than my dipole at 260 ft. By the way folks, do NOT depend on hamNEC's for showing "TOA" of real systems over real earth. These programs, so far as I know, c; /archives//html/Topband/1998-08/msg00014.html (8,197 bytes)
70. TopBand: Gads, weird science again (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 02 Aug 1998 01:30:13 -0400; Hi Bill, It sounds like you compared some reasonably efficient antennas. L,B and E would indicate about 3 dB down or so for your vertical, so that might be about one S unit. I hope you kept your test; /archives//html/Topband/1998-08/msg00015.html (8,385 bytes)
71. TopBand: high angle versus low angle radiators (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 02 Aug 1998 04:06:07 -0400; Hi Steve and all, Interesting statement, but a puzzling one. Beverages are excellent high angle receiving antennas. They WAN'T to be high angle antennas because of their height and wire orientation.; /archives//html/Topband/1998-08/msg00016.html (13,848 bytes)
72. TopBand: Gads, weird science again (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 02 Aug 1998 04:40:32 -0400; By they way, my title change was not a reflection of your message or anyone else's Bill, but rather my view of what this topic generally turns into rather quickly! I simply thought it fit better than; /archives//html/Topband/1998-08/msg00017.html (8,538 bytes)
73. TopBand: high angle at dawn (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 03 Aug 1998 08:39:27 -0400; Hi Dan, Your observations are probably the best thing going for understanding what happens at sunrise. I doubt any of the rest of can actually "see" what is going on, all we know is what antenna "wor; /archives//html/Topband/1998-08/msg00036.html (8,408 bytes)
74. TopBand: high angle versus low angle radiators (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 03 Aug 1998 09:34:47 -0400; Hi Bill, Please excuse my last post, I might have a good excuse for not being as clear as I like. I just recovered from food poisoning, and after a week of 104-105 degree temperature I'm a little "fr; /archives//html/Topband/1998-08/msg00037.html (10,457 bytes)
75. TopBand: high angle at dawn (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 04 Aug 1998 11:06:30 -0400; Hi Bob, is don't I see the same effect, from moment to moment one antenna or another will be better IF one antenna is in a fade. intuition, monopoles, But beware that the TOA of a vertical almost cer; /archives//html/Topband/1998-08/msg00059.html (8,648 bytes)
76. TopBand: angle vs polarity (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 05 Aug 1998 08:31:44 -0400; Hi Carl, <It is only at sunrise I find the dipoles useful, approaching or even That's true Carl, but I'm more interested in what I can observe with the limited antennas I have. Like everyone else, I; /archives//html/Topband/1998-08/msg00060.html (10,411 bytes)
77. TopBand: Gads, weird science again (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 05 Aug 1998 09:25:36 -0400; Hi Yuri, do factor, That is not true Yuri. Polarity is no more "fuzzied" or "wandering around" than wave angle is. The earth and everything around the rod antenna combines to modify the pattern of th; /archives//html/Topband/1998-08/msg00061.html (10,848 bytes)
78. TopBand: Propagation and GPS markers (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 06 Aug 1998 10:02:00 -0400; and after sunrise to VK is more noticeable here on days when signals are quite good on both vertical and horizontal antennas at sunrise..When signals are poor or the path is longer (VK6, FT5, UN5, et; /archives//html/Topband/1998-08/msg00074.html (7,618 bytes)
79. TopBand: z measurements (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 10 Aug 1998 11:35:50 -0400; Hi Goose, Yuri's idea does work, if the load is a variable reactance in series with a resistance. I often use small silver micas as the reactance reference but it does require some experience with re; /archives//html/Topband/1998-08/msg00092.html (8,161 bytes)
80. TopBand: Coaxial Cable Traps (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 10 Aug 1998 12:01:23 -0400; Hi Larry, I e-mailed George direct, but perhaps should post something. When you operate coax in a trap, it is VERY lossy. The cable operates at a near infinite SWR! I had to test some traps many year; /archives//html/Topband/1998-08/msg00093.html (8,467 bytes)

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