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References: [ +from:gwallner@the-beach.net: 83 ]

Total 83 documents matching your query.

61. Re: Topband: QEX article and T-vertical improvement (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Tue, 21 Jul 2009 08:23:51 -0400
Steve, 1. You end up with a larger antenna 2. You should have longer (and more) radials as moving up the current maxima up moves the return current maxima away from the base of the antenna. 3. You ma
/archives//html/Topband/2009-07/msg00085.html (8,486 bytes)

62. Re: Topband: "T" Antenna VS 30m high vertical (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Sat, 25 Jul 2009 20:10:14 -0400
Marco, I was facing the same problem: had to get rid of my top wires for mechanical reasons. First I tried a 31 meter tall vertical fed via a 20 uH inductor. It worked but not as well as what I had b
/archives//html/Topband/2009-07/msg00127.html (8,255 bytes)

63. Re: Topband: 160 meter QSLS? (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 06 Aug 2009 17:55:02 -0400
Merv, 5K0T QSL-s (about 2000 so far) have been going out since mid July. A large batch of US/Canada bound cards was bulk-shipped to me last week and will be sent to their final destinations as soon a
/archives//html/Topband/2009-08/msg00021.html (8,220 bytes)

64. Re: Topband: Tall vertical construction ideas? (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Sat, 12 Sep 2009 14:26:28 -0400
Bjorn, The inverted L you are proposing will work. For your information, however, I have done some comparison testing using my antenna, just before I rebuilt it. When my vertical broke the last time,
/archives//html/Topband/2009-09/msg00054.html (9,935 bytes)

65. Re: Topband: FK8CP Needs Parts for his 160M station (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Tue, 15 Sep 2009 13:28:47 -0400
Bob and Topbanders, I will be travelling to New Caledonia in October (as part of the TX3A Chesterfield DXpedition), where I will be meeting with Remi (FK8CP). I have some vacuum relays that I was in
/archives//html/Topband/2009-09/msg00060.html (8,000 bytes)

66. Re: Topband: What the heck? (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 17 Sep 2009 10:09:17 -0400
Carlos, Tob-Banders, How is this FOR irony: During the VK9GMW Mellish Reef operation, exactly on 1825.0 -- in the middle of our QSX frequency -- was a weak bouy with a call-sign 4HAM. It was around f
/archives//html/Topband/2009-09/msg00072.html (7,699 bytes)

67. Re: Topband: relay-switched inverted L for 40/80/160 (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Wed, 30 Sep 2009 13:45:02 -0400
Guy, You are correct to say that the 160 inv will have a high impedance feed point on 80 which is not as difficult to feed as some may think. However, the 160 inv L on 80 meters is a poor DX antenna.
/archives//html/Topband/2009-09/msg00173.html (8,909 bytes)

68. Re: Topband: Low Dipole for RX (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 01 Oct 2009 14:29:23 -0400
Steve, I have used a low dipole for some time (now it is down due to wind damage). Height was 15 feet and the total length was 24 feet. I used a 9:1 transformer at the center, not so much for matchin
/archives//html/Topband/2009-10/msg00017.html (8,075 bytes)

69. Re: Topband: Make 80m vertical work on 160 (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Mon, 05 Oct 2009 10:56:58 -0400
Franki, I have tried the linear loading described in ON4UN book. It was not better than a high Q base mounted loading coil. (I guess the Q of the linear loading element is not that high.) On the othe
/archives//html/Topband/2009-10/msg00082.html (8,450 bytes)

70. Topband: TX3A (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Sun, 01 Nov 2009 20:39:29 -0500
G'day Topbanders, The TX3A DXpedtion will be active on TB from Nov 03 to Nov 29 (QRT date tentative).TX3A 160 Meter Frequencies Our TX frequency will be 1830.5 kHz. We will be listening around 1825 k
/archives//html/Topband/2009-11/msg00025.html (6,558 bytes)

71. Re: Topband: Confusion reigns (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Wed, 25 Nov 2009 18:37:53 -0500
Which I eventually did! The confusion was really annoying here at the TX3A end. As you many know, TX3A is restricted in that we can not TX below 1830.0. Therefore we have been listening down 5 (from
/archives//html/Topband/2009-11/msg00409.html (9,021 bytes)

72. Topband: SDR-s -- Remote RX (and Remote TX) (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 31 Dec 2009 14:53:29 -0500
Gentlemen, This disruptive technology is here to stay. It is likely to change the hobby in profound ways and it will be better for us if we learned to adjust to it. Perhaps we will need new categorie
/archives//html/Topband/2010-01/msg00006.html (7,419 bytes)

73. Re: Topband: Loud clicks -- Hot Switching (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Sat, 02 Jan 2010 15:51:02 -0500
G'day TopBanders, Hot switching -- or delayed PA RX/TX switching -- is a far more common problem than is generally realized. During a recent DXpedition I heard a lot of stations and a significant per
/archives//html/Topband/2010-01/msg00031.html (7,830 bytes)

74. Re: Topband: Narrow Filtering (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Tue, 02 Feb 2010 23:43:00 -0500
It got crazier than that for me. I was calling a European station, adjusting the TX FRQ 20 Hz at a time trying to get into his filter. I made three other QSO-s before I got him: it was easier just gi
/archives//html/Topband/2010-02/msg00040.html (8,173 bytes)

75. Re: Topband: Need antenna advice (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Fri, 12 Feb 2010 07:39:07 -0500
Mike, Think of all the compromises you have made: 100 watts, only two semi-elevated radials, antenna wire wrapped over a tree, inverted U, perhaps more... Without details it is not possible to pin-p
/archives//html/Topband/2010-02/msg00115.html (8,456 bytes)

76. Re: Topband: Amplifier Help (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Wed, 17 Feb 2010 17:12:26 -0500
Niko, I have done this with a two element array and it worked great. Phasing control is much easier at low power levels, i.e. ahead of the amplifiers. You have to ensure that each antenna is matched
/archives//html/Topband/2010-02/msg00155.html (7,094 bytes)

77. Re: Topband: Amplifier Help (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Thu, 18 Feb 2010 12:13:13 -0500
Rick, The elements were 100 m long V beams that I used on 80 and 40 meters. Each element had its dedicated auto tuner (and ballun). (This was when I was in AZ and had the space). I had two SG-500 500
/archives//html/Topband/2010-02/msg00160.html (9,066 bytes)

78. Re: Topband: Magic Antenna Land (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Tue, 02 Mar 2010 10:23:57 -0500
Hugh, I don't claim to be an "antenna expert". My observations with similar configurations and my intuition suggest the following: a) The capacitance of the radial system to the salt-water (saturati
/archives//html/Topband/2010-03/msg00006.html (8,589 bytes)

79. Re: Topband: Magic Antenna Land (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Wed, 03 Mar 2010 16:15:04 -0500
Hardy, During TX3A we used a vertical T and DID NOT HAVE ANY RADIALS. The antenna was standing in salt-water on a large aluminum stand to which we connected the "ground wire". It seem to have worked
/archives//html/Topband/2010-03/msg00017.html (8,705 bytes)

80. Re: Topband: Antenna Modeling (score: 1)
Author: GEORGE WALLNER <gwallner@the-beach.net>
Date: Sat, 06 Mar 2010 02:04:24 -0500
Eddie, Fundamentally, it is simple. Think of antenna modelling as a "calculator". It allows you to save time. It allows you to test ideas. You could build everything you ever think of and test it, b
/archives//html/Topband/2010-03/msg00041.html (9,072 bytes)

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