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Total 218 documents matching your query.

81. Re: Topband: Air wound coil (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sun, 02 Sep 2018 17:08:09 -0400
If that antenna is resonant at 1900 kHz, and you have a suitably sized inductor between the bottom of the vertical wire and ground, there will likely be a tap-point on the inductor that will give you
/archives//html/Topband/2018-09/msg00007.html (9,786 bytes)

82. Re: Topband: Use shunt fed tower (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sun, 16 Sep 2018 12:05:49 -0400
I think the issue is not whether a vertical needs radials or not. A vertical monopole needs a ground system or a counterpoise. The ground system can be the actual ground or radials, or both, or even
/archives//html/Topband/2018-09/msg00125.html (14,103 bytes)

83. Topband: Daytime on 160 and Conditions (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Wed, 21 Nov 2018 07:54:51 -0500
I am out at C6AGU (FL14) with good 160 m TX and RX antennas. Last night, around 05:00 UTC, I heard a ZS station calling me. I thought no way, I must have copied the call wrong: the gray-line window s
/archives//html/Topband/2018-11/msg00205.html (8,090 bytes)

84. Re: Topband: ARRL DXCC - 160 Meters - Station Location and Boundary (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sat, 24 Nov 2018 09:26:51 -0500
Dear TopBanders, I think the League's rules have not caught up with the digital age. Four things have changed since the "analog age": 1. Noise is up 2. 160 meter DXCC (and up) is one of the last rema
/archives//html/Topband/2018-11/msg00246.html (14,682 bytes)

85. Re: Topband: Vertical antennas aren't always best for DX everywhere - the facts (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 27 Nov 2018 11:06:28 -0500
There is no such things as "best antenna". When I lived in Arizona, I had on a hill-top a doublet with 300 foot arms at 100 foot height (effectively more because of the hill-top). I used it both as a
/archives//html/Topband/2018-11/msg00281.html (16,985 bytes)

86. Re: Topband: Polarization on 160m (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Wed, 28 Nov 2018 22:19:46 -0500
Herb, Of course the VI should be counted as DX. You are 1000 miles further from the ConUS than me, and I count as DX (C6AGU), being only 200 miles from FL. It is not logical that you should compete o
/archives//html/Topband/2018-11/msg00314.html (18,059 bytes)

87. Re: Topband: Rather use N-type (was Re: The answer to PL-259 soldering/reliability problems) (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Thu, 06 Dec 2018 09:12:49 -0500
Greg, I completely agree. For all my outdoors applications I use N connectors. Unfortunately, amateur radio gear (even seriously expensive gear) is still built with SO-239 connectors which perpetuate
/archives//html/Topband/2018-12/msg00044.html (11,431 bytes)

88. Re: Topband: Unofficial archive of the works from the early pioneers of Amateur Radio's digital communications era (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 25 Dec 2018 11:26:14 -0500
JC, Thanks for this "very cool" info. Actually, the technique has even older origins: it has been used in coherent radars as a jamming countermeasure since the 60-s. Today, CCW could be implemented i
/archives//html/Topband/2018-12/msg00264.html (18,386 bytes)

89. Re: Topband: Fwd: Topband Digest -- RX Antenna Performance (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sat, 29 Dec 2018 14:44:00 -0500
Mike, N4IS (JC) does know what he is talking about. His Waller Flag, however, can be vertical or horizontal. The Horizontal WF (HWF) is certainly a class above all other loops, provided it is more th
/archives//html/Topband/2018-12/msg00324.html (23,085 bytes)

90. Re: Topband: Inverted L improvements - Part 3 (now with data) (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 22 Jan 2019 10:52:11 -0500
Todd, The resistive component should be going down with more radials, not up. Maybe you are not measuring it the right way, or something in the radial system could be resonant (which may be a good th
/archives//html/Topband/2019-01/msg00077.html (10,537 bytes)

91. Re: Topband: JA's came in droves today on 160 (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Wed, 30 Jan 2019 21:14:27 -0500
I was CQ-ing looking JA-s from C6AGU, with quiet RX conditions. I managed only one CW JA QSO. Hmm... George, AA7JV On Wed, 30 Jan 2019 13:56:23 -0600 <daraymond@iowatelecom.net> wrote: As if there wa
/archives//html/Topband/2019-01/msg00182.html (9,220 bytes)

92. Re: Topband: JA's came in droves today on 160 (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Fri, 01 Feb 2019 10:11:31 -0500
Terry makes the crucial point: FT8 (and the likes) should be in a different class. Other hobbies do that: sailboats don't race against power boats, etc. I don't think that there is much point arguing
/archives//html/Topband/2019-02/msg00008.html (10,691 bytes)

93. Re: Topband: Lack of Activity (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Wed, 13 Feb 2019 17:25:36 -0500
Roger, On Monday night I worked about 50 EU station from C6AGU. There was good activity all around. Last night (Tue) was very noisy here (and probably most of the SE US) with nasty lightning crashes.
/archives//html/Topband/2019-02/msg00123.html (9,412 bytes)

94. Re: Topband: Lack of QSO's (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sun, 17 Feb 2019 12:05:04 -0500
The bands may be quiet at times, but last night from C6AGU I had contest runs that were more like what you experience on 20 m: 180 - 200 QSO-s per hour peaks. No lack of QSO-s here. TKS and 73, Georg
/archives//html/Topband/2019-02/msg00160.html (7,378 bytes)

95. Re: Topband: Lack of QSO's (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sun, 17 Feb 2019 16:48:24 -0500
Conditions were excellent. In fact too good: Even with a directional RX antenna pointing towards NA, the EU stations were "QRM-ing" us (and calling us), until their SR. Of course, contests and DXpedi
/archives//html/Topband/2019-02/msg00169.html (9,103 bytes)

96. Re: Topband: Top Loading Advice (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Sun, 17 Mar 2019 21:42:06 -0400
Robert, I would leave it as it is. I have experimented a lot with sloping top-loading wires and found that 12 - 14 meters (~40') is about right with a 55' vertical section. The only thing I would do
/archives//html/Topband/2019-03/msg00067.html (9,382 bytes)

97. Re: Topband: Bouvet (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 26 Mar 2019 19:32:57 -0400
Maybe not. They seem to be in the middle of a huge storm. Sometimes, it is best to turn downwind/down-sea until things get better. Also, they may have to make some repairs, which are much easier goin
/archives//html/Topband/2019-03/msg00136.html (9,159 bytes)

98. Re: Topband: The DXpedition FT8 quandry (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 09 Apr 2019 23:07:50 -0400
Dear TopBanders, Ed Sawyer raises a very timely and important question. It is a fact that both CW and FT8 have large followings today. DXpeditions now face a dilemma on 160 meters: to operate CW or F
/archives//html/Topband/2019-04/msg00018.html (10,023 bytes)

99. Re: Topband: doublet as marconi (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Wed, 10 Apr 2019 14:22:20 -0400
Mike, I had such a set up in Arizona. It worked well. The tuner was at the base of the antenna. I used two vacuum relays to bypass the balun and short the two sides of the ladder line. GL and 73, Geo
/archives//html/Topband/2019-04/msg00028.html (8,292 bytes)

100. Re: Topband: Lack of NA Activity on CW (score: 1)
Author: GEORGE WALLNER <aa7jv@atlanticbb.net>
Date: Tue, 23 Apr 2019 16:34:50 -0400
Steve, You have summed it up perfectly. Perhaps it will be FT8 that will keep Amateur Radio alive with the new "smart-device-bound, multi-tasking, app-addicted" generation. Times change. TKS and 73,
/archives//html/Topband/2019-04/msg00138.html (18,786 bytes)


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