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References: [ +from:w8ji.tom@MCIONE.com: 149 ]

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41. TopBand: VK6 hrd/wkd (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 07 Oct 1998 07:26:00 -0400; Static was 30 dB over nine yesterday Mike from a long string of violent thunderstorms in Texas extending to the north and east. Most W4's that are not masochistic went back to bed! Today VK3ZL was wo; /archives//html/Topband/1998-10/msg00026.html (7,238 bytes)
42. TopBand: A really quiet location (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 08 Oct 1998 10:57:40 -0400; Hi Steve, says I can vouch for your friend's claims. I have to be careful here to be sure I have the correct antenna connected, no way can I tell by the S meter alone. I'm on a rural (one lane dirt); /archives//html/Topband/1998-10/msg00041.html (9,884 bytes)
43. TopBand: Re: A really quiet location (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Mon, 12 Oct 1998 09:35:44 -0400; Hi Peter, Great answer! I never thought about broadband IMD generating hash in a receiver front end. That doesn't seem to be a problem with my 751A's. I wondered the same thing myself, why so many pe; /archives//html/Topband/1998-10/msg00051.html (7,407 bytes)
44. TopBand: The delicate dilema of the pile-up (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 14 Oct 1998 13:23:51 -0400; Hi Steve, I listen to the pile ups some mornings. Its an unruly mess up here. One thing that would help is to work split. Then, when people call and call (and some do call endlessly), you can have a; /archives//html/Topband/1998-10/msg00066.html (9,373 bytes)
45. TopBand: interference problems (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 16 Oct 1998 09:00:05 -0400; Hi Tom, There obviously is a non-linear device at "work" somewhere in the area of your system. If it was actually generated in your antenna, it would probably stop for a while after you transmitted.; /archives//html/Topband/1998-10/msg00076.html (8,355 bytes)
46. TopBand: 75 meter vert. fed with open wire (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 20 Oct 1998 09:52:01 -0400; Hi Lane, radials wire The feedline will be part of the antenna and radiate in this setup Lane. Feeding an unbalanced antenna with a balanced line is a poor method. You can only cure the problem with; /archives//html/Topband/1998-10/msg00092.html (7,939 bytes)
47. TopBand: Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 22 Oct 1998 13:12:49 -0400; This might be of general interest to people with long feedlines. I'm installing a very tall tower for an expanded 160 system 1400 feet back from my shack. I needed a low-loss feeder to get RF back th; /archives//html/Topband/1998-10/msg00109.html (7,424 bytes)
48. TopBand: Re: [TowerTalk] Open Wire Line (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 23 Oct 1998 09:04:59 -0400; Home made from UV resistant Lexan per 4X4NJ's suggestion. If the spreaders lasts through a whole year of GA sunshine without deterioration of any kind, I'm thinking of having a few thousand stamped; /archives//html/Topband/1998-10/msg00117.html (7,050 bytes)
49. TopBand: Beverage question (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 27 Oct 1998 08:19:36 -0500; Hi Dave, Glad to see you have the Beverages working. If have show I have no idea what causes that effect Dave, but IMHO it can come from more than one effect. That effect (but without the complete lo; /archives//html/Topband/1998-10/msg00143.html (10,428 bytes)
50. TopBand: Digital signals (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Wed, 28 Oct 1998 22:08:29 -0500; Hi Bob, I posted something back sometime in summer about this, and asked if anyone knew where all these signals were coming from. Some days, I logged dozens of digital signals from 1.8 to 2 MHz, many; /archives//html/Topband/1998-10/msg00161.html (7,278 bytes)
51. TopBand: inverted vee, ladder line fed (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 30 Oct 1998 18:44:12 -0500; Hi Bill If you have a good 160 tuner, you could use ladder line. Avoid feedline lengths between 110-150 feet. I use ladder line on many of my antennas, it works quite well. For high power, especially; /archives//html/Topband/1998-10/msg00172.html (10,056 bytes)
52. TopBand: Need info Early JA QSO's (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 03 Sep 1998 11:15:42 -0400; Hi, Does anyone know the furthest distance east JA was worked on 160 during LORAN operation, and also how much power the LORAN transmitters ran? I'm only interested in QSO's prior to winter 1972. Ple; /archives//html/Topband/1998-09/msg00012.html (6,694 bytes)
53. TopBand: Beverage transformer core question (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 03 Sep 1998 14:36:46 -0400; Hi Dave, SNIP The core Misek suggests (dc ui~10000) is actually not the correct core for 160 anyway. Ui values should be picked at the lowest operating frequency, never at dc! The dc ui 10, 000 core; /archives//html/Topband/1998-09/msg00013.html (8,505 bytes)
54. TopBand: Beverage transformer core question (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 04 Sep 1998 09:11:56 -0400; Hi John, I certainly respect your opinion on may things, but we'll just have to agree to disagree on this one. need 73 and 43 materials have nearly twice ui at 2 MHz than the cores Misek speced. That; /archives//html/Topband/1998-09/msg00015.html (9,278 bytes)
55. TopBand: Re: Beverage Terminator Protection (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 04 Sep 1998 09:47:47 -0400; Hi Eric, I found that carbon film and metal film resistors, no matter what the size, failed almost every time a storm occurred. They fail even when the lightning is cloud to cloud, or cloud to ground; /archives//html/Topband/1998-09/msg00016.html (8,372 bytes)
56. TopBand: Transformer questions (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sun, 06 Sep 1998 23:32:03 -0400; I've received about two dozen e-mails from people on the reflector asking the same basic questions. Unfortunately, there isn't a good book that describes how to select cores and what correct winding; /archives//html/Topband/1998-09/msg00037.html (11,645 bytes)
57. TopBand: Re: de ON4UN (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Tue, 08 Sep 1998 15:57:17 -0400; Hello John, That should not be a surprise. Core diameter has a LARGE effect on loss in transformers like this. The magnetic path must be kept short, because loss tangent of high permeability cores is; /archives//html/Topband/1998-09/msg00051.html (9,063 bytes)
58. TopBand: 1:16 Balun Xfmr (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Thu, 10 Sep 1998 14:00:34 -0400; Hi Earl, I had to "test" a new analyzer prototype using a 16 bit A-D converter today, and one requirement is I like to use is some real world devices. As such, I wound some transformers on the 73 mat; /archives//html/Topband/1998-09/msg00058.html (11,209 bytes)
59. TopBand: 1:16 Balun Xfmr (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Fri, 11 Sep 1998 14:10:55 -0400; problem. All antennas that are non-symmetrical or non-symmetrically installed with respect to the environment around them, and less than perfectly grounded at the feedpoint, have this problem to a g; /archives//html/Topband/1998-09/msg00063.html (11,461 bytes)
60. TopBand: 1:16 Balun Xfmrs (score: 1): Author: w8ji.tom@MCIONE.com (w8ji.tom); Date: Sat, 12 Sep 1998 13:12:37 -0400; Hi Earl, Ameritron uses them, PN 412-5250. Fair-Rite corp makes them, P/N 2873000202. I had the dimensions wrong. I eyeballed it. They are just over 1/2 inch long. That gives over 1" of ferrite aroun; /archives//html/Topband/1998-09/msg00069.html (7,492 bytes)

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