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1. Topband: Trees as Antennas (score: 1): Author: kn4lf at tampabay.rr.com (Thomas Giella KN4LF); Date: Tue Aug 12 11:20:43 2003; We talk about and experiment with antennas all the time as 160 dxers and contesters. I am in the process of adding new antenna links to my website "KN4LF 160 Meter Amateur Radio Resources & More" at; /archives//html/Topband/2003-08/msg00059.html (7,614 bytes)
2. Topband: Feeding 1/2 Wave Verticals (score: 1): Author: kn4lf at tampabay.rr.com (Thomas Giella KN4LF); Date: Wed Aug 20 16:10:53 2003; In the past I have successfully loaded up an electrical 1/2 wave vertical tee with a parallel network. I used 800 watts and never had high voltage flashover problems but I did use very large componen; /archives//html/Topband/2003-08/msg00103.html (7,279 bytes)
3. Topband: RE: IMD On FT-757 & FT-747GX VS FT-840 Etc (score: 1): Author: kn4lf at tampabay.rr.com (Thomas Giella); Date: Tue Jun 24 15:11:51 2003; My QTH is in a suburban high signal environment with powerful broadcast band stations nearby. I have a 50 KW station on 1010 kc approximately 4 miles to my WNW, a 10 kw station on 760 kc approximatel; /archives//html/Topband/2003-06/msg00054.html (8,056 bytes)
4. Topband: Lightning Protection E-List (score: 1): Author: kn4lf at tampabay.rr.com (Thomas Giella); Date: Sat Apr 19 11:51:03 2003; I'm a member of a moderated Yahoo Groups E-list called Lightning ProtectionLightning & Power Quality Issues at: http://groups.yahoo.com/group/LightningProtection/?yguid=135876578 . It has 761 profess; /archives//html/Topband/2003-04/msg00038.html (7,217 bytes)
5. Topband: Stew Perry Propagation Condx (score: 1): Author: kn4lf@gbronline.com (Thomas Giella KN4LF); Date: Sat, 4 Jan 2003 17:04:57 -0500; Allot of the variability of or perception of variability of propagation conditions during the S.P. CW contest can probably be explained as variations in local QRN levels and unexpected nulls in certa; /archives//html/Topband/2003-01/msg00030.html (7,933 bytes)
6. Topband: Skewed Propagation Paths (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella KN4LF); Date: Thu, 16 Jan 2003 08:16:28 -0500; Basically the simplest way to look at medium frequency signal propagation path skewing is that the transmitted RF signal will "always" seek to propagate along the path with least absorption, which al; /archives//html/Topband/2003-01/msg00089.html (7,799 bytes)
7. Topband: Topband Skewed Propagation (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella KN4LF); Date: Thu, 16 Jan 2003 21:56:10 -0500; .....Basically the simplest way to look at medium frequency signal propagation path skewing is that the transmitted RF signal will "always" seek to propagate along the path with least absorption.....; /archives//html/Topband/2003-01/msg00101.html (8,013 bytes)
8. Topband: Topband Skewed Propagation (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella KN4LF); Date: Fri, 17 Jan 2003 10:31:42 -0500; The whole concept of skewed propagation via this current thread that we are discussing is just a matter of semantics. Also I appreciate Bill W4ZV allowing me the time to explain the theory on this re; /archives//html/Topband/2003-01/msg00109.html (10,439 bytes)
9. Topband: SR/SS Greyline Research (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella KN4LF); Date: Fri, 17 Jan 2003 11:36:14 -0500; I am a member of the Propagation Studies Committee of the RSGB. Within the organization their is very useful research currently being conducted on sunnrise/sunset greyline propagation enhancement. Th; /archives//html/Topband/2003-01/msg00113.html (7,206 bytes)
10. Topband: 160 Meter Propagation (score: 1): Author: kn4lf@gbronline.com (Thomas Giella, KN4LF); Date: Wed, 18 Dec 2002 23:05:33 -0500; Here are some general guidelines concerning correlation of propagation indices to actual expected 160 meter propagation conditions. 1.) Dropping indices numbers are better. 2.) For medium frequencies; /archives//html/Topband/2002-12/msg00235.html (8,387 bytes)
11. Topband: 160 Topband Propagation Software (score: 1): Author: kn4lf@gbronline.com (Thomas Giella, KN4LF); Date: Tue, 24 Dec 2002 13:11:54 -0500; On my website KN4LF 160 Meter Amateur Radio Resources And More at http://www.kn4lf.com in the top 1/3 of the left side column are web page links to 160 meter sofware downloads. 73 & Seasons Greetings; /archives//html/Topband/2002-12/msg00272.html (6,902 bytes)
12. Topband: 160 Meter Propagation & Weather (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella, KN4LF); Date: Fri, 01 Nov 2002 10:55:27 -0500; ...Professional scientific study of this effect has been conducted by E.S. Kazimirovsky and V.D. Kokourov of the Solar Terrestrial Physics Institute at Irkutsk, Russia http://iszf.irk.ru/ Their exten; /archives//html/Topband/2002-11/msg00009.html (7,841 bytes)
13. Topband: 160 Meter Propagation Indices (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella, KN4LF); Date: Sun, 03 Nov 2002 15:27:46 -0500; Hello Fellow Radio Friends, Due to the dismal Topband propagation conditions seen during the CQ WW contest last weekend, I've received numerous requests for and explanation of 160 meter propagation c; /archives//html/Topband/2002-11/msg00020.html (7,817 bytes)
14. Topband: Short Monopoles (score: 1): Author: Thomas Giella, KN4LF" <kn4lf@arrl.net (Thomas Giella, KN4LF); Date: Tue, 12 Nov 2002 21:58:48 -0500; Tom, Just a personal observation concerning short monopoles. When I model a 50 foot vertical with one 200 foot top hat wire using EZNEC 3.0 on 1830 kc, then add two more 200 foot top hat wires, the n; /archives//html/Topband/2002-11/msg00064.html (9,139 bytes)
15. Topband: DSP (score: 1): Author: kn4lf@gbronline.com (Thomas Giella, KN4LF); Date: Thu, 14 Nov 2002 21:09:06 -0500; I use a discontinued Timewave DSP-9+ with my FT-990 and it works very well on CW and phone with lightning QRN. It's less effective on powerline noise but still works. 73, Thomas Giella, KN4LF Plant C; /archives//html/Topband/2002-11/msg00081.html (6,544 bytes)
16. Topband: 2 Day MF RX Prop Outlook For CQ WW CW DX Contest (score: 1): Author: kn4lf@gbronline.com (Lori Giella); Date: Fri, 22 Nov 2002 16:04:15 -0600; The KN4LF 2 Day MF Radio Propagation Outlook #2002-33A Update, for the CQ WW CW DX Contest has been published at 4:00 PM EST and can be seen at: http://www.kn4lf.com/kn4lf5.htm . 73, Thomas Giella, K; /archives//html/Topband/2002-11/msg00143.html (6,628 bytes)
17. Topband: Large TSTM areas as MF "wall" (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella, KN4LF); Date: Mon, 28 Oct 2002 06:22:36 -0500; Mac PY2CW Asked: Questions: A large thunderstorm area in the dx path is a factor for weaker sigs? Charged clouds "blocks" ground wave ? What is the mechanism ? Thomas KN4LF Says: As a retired Meteoro; /archives//html/Topband/2002-10/msg00147.html (7,741 bytes)
18. Topband: 160 Propagation & Weather (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella, KN4LF); Date: Tue, 29 Oct 2002 13:24:00 -0500; Thomas KN4LF Says: Joe Dube KK4TR of Brooksville, FL and I have conducted subjective observations of this effect via 160 and 120 meters and the MF broadcast band for the past 4 winters. Subjective ob; /archives//html/Topband/2002-10/msg00158.html (7,761 bytes)
19. Topband: 160 Meter Propagation Outlook (score: 1): Author: Thomas Giella, KN4LF" <kn4lf@arrl.net (Thomas Giella, KN4LF); Date: Tue, 6 Aug 2002 18:16:07 -0400; Just an FYI, I've resumed my non profit Medium Frequency Radio Propagation Outlook. At can be found online at www.kn4lf.com/index5.htm . You can also subscribe to it directly via email too at the sam; /archives//html/Topband/2002-08/msg00029.html (7,141 bytes)
20. Topband: Paying For Topband E-List (score: 1): Author: kn4lf@tampabay.rr.com (Thomas Giella, KN4LF); Date: Wed, 14 Aug 2002 11:50:00 -0400; We have all grown accustomed to the "free" Internet and it's a hard thing to give up. Also because we invest so much in our station equipment and organization memberships like the ARRL, etc. and publ; /archives//html/Topband/2002-08/msg00034.html (6,834 bytes)

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