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References: [ +from:MarkWA1ION@aol.com: 18 ]

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1. Topband: New Technical Article On-Line (score: 1): Author: MarkWA1ION at aol.com (MarkWA1ION@aol.com); Date: Wed Aug 20 05:54:32 2003; I have a new article "Medium Frequency Amplifier Circuits Compared". The PDF version is available at "http://www.qsl.net/wa1ion/amp/amptests.pdf" and a zipped version of the Word document can be down; /archives//html/Topband/2003-08/msg00095.html (6,847 bytes)
2. Topband: new technical article on-line (score: 1): Author: MarkWA1ION at aol.com (MarkWA1ION@aol.com); Date: Fri Jul 18 19:11:53 2003; I have published a new on-line technical article "Broadband Receiving Antenna Matching". The PDF version of the article can be accessed at "http://www.qsl.net/wa1ion/bev/bb_antenna_matching.pdf" . Zi; /archives//html/Topband/2003-07/msg00085.html (6,855 bytes)
3. Topband: new antenna article on-line (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Wed, 13 Nov 2002 23:06:35 -0500; I've posted a new article "New Termination Control Method for Flag, Pennant, and similar Antennas" online. It describes a simple "in the shack" method of adjusting the termination resistance value of; /archives//html/Topband/2002-11/msg00074.html (7,122 bytes)
4. Topband: new antenna article (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Thu, 1 Aug 2002 22:07:47 EDT; I have a new receiving antenna article published on the Web. Entitled "Phased Spaced Active Whips and Broadband Loops", it may be viewed at the following URL's: "http://www.qsl.net/wa1ion/coupler/pha; /archives//html/Topband/2002-08/msg00004.html (7,069 bytes)
5. Topband: Re: Noise isolation transformers (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Wed, 28 Aug 2002 22:25:33 EDT; Hi Les. I haven't had any experience with balanced shielded cable feedlines. I have used regular balanced twinlead that was not shielded (300 ohm TV line, 450/600 ohm open wire line, etc.) 300-ohm tw; /archives//html/Topband/2002-08/msg00113.html (7,944 bytes)
6. Topband: Flag Antenna Construction and Test Results article (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Fri, 19 Jul 2002 23:43:21 -0400; I have a new antenna article available on the Web. Entitled "Flag Antenna Construction and Test Results", it describes a compact terminated broadband loop design that can create a cardioid pick-up pa; /archives//html/Topband/2002-07/msg00128.html (7,152 bytes)
7. Topband: K9AY loop (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Wed, 12 Jun 2002 19:40:19 -0400; The following site has links to almost all the K9AY information you'll need: "http://www.hard-core-dx.com/nordicdx/antenna/loop/k9ay/index.html" Also look at: "http://www3.telus.net/7dxr/ircatech/bry; /archives//html/Topband/2002-06/msg00019.html (7,408 bytes)
8. Topband: tech. article - rx antenna amp. (score: 1): Author: MarkWA1ION@aol.com (MarkWA1ION@aol.com); Date: Thu, 04 Apr 2002 22:38:15 -0500; I have a new technical article on the Web. It describes an amplifier module suitable for three different antenna types: low-impedance broadband loop, high-impedance terminated loop (Pennant, Flag, et; /archives//html/Topband/2002-04/msg00006.html (7,109 bytes)
9. Re: Topband: Vertical in the woods (score: 1): Author: MarkWA1ION@aol.com; Date: Wed, 15 Oct 2003 19:29:48 EDT; << I don't think any reliable information documented anywhere could ever answer your questions with hard data. Information on effects of trees on low bands has been impossible to find. In the late '6; /archives//html/Topband/2003-10/msg00098.html (9,489 bytes)
10. Topband: new technical article: "Passive Broadband Phasing" (score: 1): Author: MarkWA1ION@aol.com; Date: Sun, 25 Apr 2004 00:13:31 -0400; New technical article online: "Passive Broadband Phasing" PDF is at "http://members.aol.com/RadioWA1ION/passive_bb_phasing.pdf". Zipped DOC & drawings are at "http://members.aol.com/RadioWA1ION/passi; /archives//html/Topband/2004-04/msg00222.html (7,130 bytes)
11. Re: Topband: elevated k9ay loop (score: 1): Author: MarkWA1ION@aol.com; Date: Sat, 19 Feb 2005 12:57:09 -0500; I would go with a Flag or Pennant antenna in a situation such as this. Mark Connelly, WA1ION Billerica, MA << Rudy, A few K9AY Loop users have successfully installed them above ground (2 or 3 meters); /archives//html/Topband/2005-02/msg00197.html (6,912 bytes)
12. Topband: Beverage Installation Question (score: 1): Author: markwa1ion@aol.com; Date: Tue, 15 Aug 2006 12:56:02 -0400; << ON4UN discusses using electric-fence insulators when using tree trunks as support, which infers that having the wire close to a tree trunk is ok. When I installed mine, I cleared a path through th; /archives//html/Topband/2006-08/msg00086.html (7,930 bytes)
13. Re: Topband: 24th January 2007 Conditions (score: 1): Author: markwa1ion@aol.com; Date: Thu, 25 Jan 2007 12:30:55 -0500; Eddy VE3CUI / VE3XZ commented on extraordinary 160-m conditions to Europe. I noted the following on high-end AM band frequencies, also bearing out the fact that conditions have taken a decided turn f; /archives//html/Topband/2007-01/msg00391.html (7,772 bytes)
14. Re: Topband: 4 square receiving array (score: 1): Author: markwa1ion@aol.com; Date: Wed, 31 Jan 2007 15:50:05 -0500; No, it cannot. 75 ohms reactance terminating a 75 ohm line is an infinite SWR. A reactance can only be converted to a resistance by applying an opposite sign reactance. say you had a short whip with; /archives//html/Topband/2007-01/msg00488.html (11,602 bytes)
15. Re: Topband: Topband Digest, Vol 122, Issue 15 (score: 1): Author: Mark Connelly <markwa1ion@aol.com>; Date: Thu, 14 Feb 2013 17:35:22 -0500 (EST); Several years ago I did testing of broadband antennas for array use in an application for DXing on the AM broadcast band. In the discussion below, numbers in brackets indicate footnotes that referenc; /archives//html/Topband/2013-02/msg00137.html (19,791 bytes)
16. Topband: WLW (score: 1): Author: Mark Connelly <markwa1ion@aol.com>; Date: Tue, 17 Sep 2013 11:15:04 -0400 (EDT); 1.7 megawatts out of WLW was no doubt the highest power run by anyone in the Western Hemisphere on medium wave. Duba, Saudi Arabia runs 2 megawatts on 1521 kHz all the time. No wonder that it often s; /archives//html/Topband/2013-09/msg00235.html (8,419 bytes)
17. Re: Topband: WLW (score: 1): Author: Mark Connelly <markwa1ion@aol.com>; Date: Tue, 17 Sep 2013 14:14:52 -0400 (EDT); Got it, I'll cease from sending out this sort of rubbish. Mark I HATE it when Topbanders get bored; thing like this "WCKY<WLW" etc flood out. Bill--W4BSG 1.7 megawatts out of WLW was no doubt the hig; /archives//html/Topband/2013-09/msg00239.html (9,951 bytes)
18. Re: Topband: WLW (score: 1): Author: Mark Connelly <markwa1ion@aol.com>; Date: Tue, 17 Sep 2013 16:35:03 -0400 (EDT); The Saudi Arabia 1521 recordings were made from the car at local MA beach sites with a Drake R8A receiver and a loop antenna on the car roof. The "magic bullets" for good reception are: (a) Select a; /archives//html/Topband/2013-09/msg00243.html (14,894 bytes)

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