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61. Re: Topband: T loaded vertical (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Mon, 22 Sep 2003 17:19:49 -0300; Rich, Try to get the current loop to appear at the connection to the flat top T. This can be done by modeling or in the old days we would just tape a small 6 volt bulb on a loop at the T. While runni; /archives//html/Topband/2003-09/msg00099.html (8,491 bytes)
62. Re: Topband: T loaded vertical (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Tue, 23 Sep 2003 10:41:23 -0300; Tod, I should have been more specific. Top loading with a T type marconi with a short vertical 60 foot down lead can be peaked to reasonable performance with a 75 foot (each side of center) flat top; /archives//html/Topband/2003-09/msg00109.html (8,918 bytes)
63. Re: Topband: One wavelength Beverage (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Thu, 16 Oct 2003 06:35:53 -0400; Tom Rauch wrote: There is no reason not to use insulated wire except for weight, and no special reason to use it. 73 Tom I can think of one good reason to use insulated wire such as in a quick BOG in; /archives//html/Topband/2003-10/msg00099.html (8,840 bytes)
64. Re: Topband: Ground Radials (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Thu, 13 Nov 2003 13:12:00 -0400; The best way to lay down a ground system in my view is to rent a small "Ditch Witch" for the weekend and specify you want the vibrating plow attachment. The vibrating plow blade is hollow and the cop; /archives//html/Topband/2003-11/msg00100.html (9,981 bytes)
65. Re: Topband: Ground Radials (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 14 Nov 2003 09:27:50 -0400; Mark, "Ditch Witch" is located at http://www.ditchwitch.com and you should go to the section on "trenchers and plows" "pedestrian" if you are interested in a walk behind unit. Then check out the "Att; /archives//html/Topband/2003-11/msg00109.html (9,345 bytes)
66. Re: Topband: Cone of Silence (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Wed, 10 Dec 2003 12:52:37 -0400; I sure enjoy the discussion on this topic. However, I would like to sheepishly, perhaps foolishly, ask if folding the short vertical Beverage termination down lead wire back and forth on itself with; /archives//html/Topband/2003-12/msg00094.html (9,020 bytes)
67. Topband: AM Station Locator by ZipCode (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 12 Dec 2003 10:39:26 -0400; Here is another source of a superb AM station locator that may in some respects be easier to use than the FCC Media Bureau site. This one is by V-Soft and provides on line signal level analysis in bo; /archives//html/Topband/2003-12/msg00119.html (6,848 bytes)
68. Re: Topband: Beverage on Ice (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Mon, 22 Dec 2003 13:50:44 -0400; Ron, You are describing a classic military Beverage used in the Arctic during the DEW line installations or Antarctica perhaps today. Sure run it out on the ice an snow and add a 1/4 wave piece of wi; /archives//html/Topband/2003-12/msg00187.html (8,233 bytes)
69. Re: Topband: Two Wire Beverage Question (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Thu, 25 Dec 2003 12:01:13 -0400; Tracey, As I understand the principles of the Beverage both conductors should be parallel to the ground to work properly. The good operation of a Beverage depends on a process known as wave tilt. "Wh; /archives//html/Topband/2003-12/msg00213.html (9,005 bytes)
70. Topband: DX window (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Mon, 29 Dec 2003 15:40:32 -0400; Ron, During a Contest banning NA DX stations from the DX-window would not only be detrimental to the having more none NA DX-multipliers giving everyone, none DX NA and none NA DX a better chance to w; /archives//html/Topband/2003-12/msg00272.html (9,706 bytes)
71. Topband: To Balun or not to Balun that is the question. (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Tue, 30 Dec 2003 12:28:43 -0400; After reading Tom's (W8JI) excellent work on baluns, which he prepared while the rest of us were enjoying SP 2003, I have his e mail and radiation distribution information in a 3 ring binder collecti; /archives//html/Topband/2003-12/msg00286.html (10,808 bytes)
72. Re: Topband: To Balun or not to Balun that is the question. (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Tue, 30 Dec 2003 22:51:27 -0400; I checked my Hy-Gain 204BA manual and their recomended choke turns is "12 turns of RG-8 cable 6" (15.2 CM in diameter)". This is what I use on the 204BA and correct the amount of turns.. Then Hy-Gain; /archives//html/Topband/2003-12/msg00315.html (8,207 bytes)
73. Re: Topband: Plate chokes (Balun thread) (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 02 Jan 2004 17:02:59 -0400; Greg, Rockwell-Collins in the 80's marketed an AM transmitter called the "Power Rock" that used a clever grounded plate construction. (Achieving DC ground through plate resonant circuit so the RF wou; /archives//html/Topband/2004-01/msg00025.html (10,099 bytes)
74. Topband: Using DSP Software (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 02 Jan 2004 17:54:43 -0400; Last week I sent S9SS a .wav file of his booming signal into North America on topband. I tried to put myself in his shoes with the awesome QRN level he experiences. On the tape were periods of very h; /archives//html/Topband/2004-01/msg00026.html (9,386 bytes)
75. Re: Topband: Beverages over Radials (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Tue, 06 Jan 2004 13:28:42 -0400; Clive, I ran a long beverage over a salt pond (brackish water with high salt content) near my QTH and its performance was not good until I ran the same wire over earth. Another attempt was to use the; /archives//html/Topband/2004-01/msg00065.html (8,814 bytes)
76. Topband: Real Time DSP Software (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Thu, 08 Jan 2004 10:51:04 -0400; Dear Topbander, Several weeks ago I mentioned the use of various noise reduction and CW signal processing software that could turn the shack PC into a useful DSP processor for the reduction of noise,; /archives//html/Topband/2004-01/msg00091.html (8,595 bytes)
77. Re: Topband: Beverage Noise pickup (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Sat, 10 Jan 2004 10:17:40 -0400; Greg, If a cage is used to shunt feed a 1/4 wave vertical grounded tower, I think grounding the cage at the base during RX with a relay would decouple a significant portion of the tower at the RX fre; /archives//html/Topband/2004-01/msg00115.html (7,797 bytes)
78. Re: Topband: Antennas detuning ? (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Fri, 16 Jan 2004 16:18:11 -0400; Plasticos Omega wrote: Hi, I am shunt feeding my tower on 160 mts and abt 12 feet I have a Tintanex V-80, I suspect that there is some kind of coupling between them. How may I verify my suspicious? K; /archives//html/Topband/2004-01/msg00148.html (8,695 bytes)
79. Topband: JA openning to the Carribean on 160 (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Sun, 01 Feb 2004 21:39:03 -0400; On Saturday morning I checked for DX on 160 and the band sounded really strange and then just before sunrise there they were, oodles of JA's sounding like East Coast W's all a conservative 579. I wor; /archives//html/Topband/2004-02/msg00005.html (7,968 bytes)
80. Re: Topband: Local Noise Environment (score: 1): Author: Herb Schoenbohm <herbs@vitelcom.net>; Date: Wed, 18 Feb 2004 08:21:45 -0400; Pete Smith wrote: I am trying to figure out my local noise environment and understand what (if anything) I can do to correct it. Pete, It is easier if you can find the source. Use an inexpensive batt; /archives//html/Topband/2004-02/msg00273.html (9,871 bytes)

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