Mail Archive Search: <+from:Thomas Giella>

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References: [ +from:Thomas: 325 ] [ Giella: 245 ]

Total 186 documents matching your query.

141. Topband: G4ILO MF/HF Propagation Program (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Thu, 19 Feb 2004 13:33:31 -0500; I want to share with the global DX/contesting community a very handy piece of MF/HF propagation prediction software that I have been evaluating for a while. It is made by G4ILO who is a professional; /archives//html/Topband/2004-02/msg00281.html (8,426 bytes)
142. Topband: X Class Flare (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Wed, 25 Feb 2004 21:31:24 -0500; It looks like our long run of good 160 propagation conditions is coming to an end, courtesy of an X class flare currently in progress, in association with sunspot group #10564 located at N15E00. This; /archives//html/Topband/2004-02/msg00317.html (7,469 bytes)
143. Topband: 160 PSK31 Operation (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Sun, 14 Mar 2004 16:06:46 -0000; I try to operate 160 PSK31 as much as possible but rarely see any activity as of late. I heard some signals last night but could not decode them because of a loose connection in my homebrew interface; /archives//html/Topband/2004-03/msg00178.html (7,663 bytes)
144. Topband: XF4IH In FL (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Sun, 14 Mar 2004 16:37:05 -0000; On UTC the 13th XF4IH was 59+ on 80 meter phone and 579 on 160 CW here in west central Florida. On UTC the 14th I didn't hear a peep from them on 1824 kc! 73 & GUD DX, Thomas F. Giella, KN4LF Space &; /archives//html/Topband/2004-03/msg00180.html (7,903 bytes)
145. Topband: S9SS On 160 (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Mon, 15 Mar 2004 02:11:31 -0000; Antenna polarization plays a large role in the success of a long haul DX contact. As a medium frequency RF signal traverses Earth's magnetic lines of force in a perpendicular manner on high and mid l; /archives//html/Topband/2004-03/msg00187.html (8,834 bytes)
146. Topband: 3B9C Propagation (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Sat, 20 Mar 2004 15:05:49 -0000; If you look at the weather map last evening there was a strong extra-tropical surface-250 mb low off the coast of New England. This winter storm system produced an upward propagating Internal Buoyanc; /archives//html/Topband/2004-03/msg00225.html (10,259 bytes)
147. Topband: 3B9C Heard in Florida (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Tue, 23 Mar 2004 16:04:08 -0000; I heard 3B9C yesterday Monday evening UTC here in west Central Florida. He was 559 on my tee vertical and 579 on my low doublet. He peaked here at his local sunrise. The opening into our region from; /archives//html/Topband/2004-03/msg00235.html (8,187 bytes)
148. Topband: 3B9C Online Log Etc. (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Wed, 24 Mar 2004 15:01:41 -0000; I presume that most already have this online log website for 3B9C saved but just in case here it is. http://www.fsdxa.com/3b9c/online-logs.html . Last night I worked 3B9C on 3795/3790 kc phone and I; /archives//html/Topband/2004-03/msg00245.html (7,760 bytes)
149. Topband: 3B9C In Florida/ Receive Antennas (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Thu, 25 Mar 2004 15:19:43 -0000; I had the usual local QRN on the 160 tee vertical and even the low doublet last night. Very frustrating, especially in light of not having room for listening antennas. In any event I listened for 3B9; /archives//html/Topband/2004-03/msg00256.html (8,504 bytes)
150. Topband: 160 Listening Antennas (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Fri, 26 Mar 2004 14:26:14 -0000; I received MANY personal responses to my query concerning receiving antennas and their proximity to transmitting antennas. I received allot of valuable information and want to thank all who responded; /archives//html/Topband/2004-03/msg00275.html (7,365 bytes)
151. Topband: Antipodal Focusing Of RF Signals (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Mon, 29 Mar 2004 03:30:48 -0000; True antipodal focusing of transmitted RF signals does occur at HF frequencies. BUT as Bob Brown NM7M pointed out in an earlier post the ionosphere at medium frequencies is to heterogeneous to suppor; /archives//html/Topband/2004-03/msg00315.html (8,057 bytes)
152. Topband: MF Anti-Podal Propagation Enhancement (score: 146): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Tue, 30 Mar 2004 00:06:06 -0000; Most of the propagation enhancement that we may mistake for antipodal focusing is actually via the E Valley/F Layer ducting mechanism. 73 & GUD DX, Thomas F. Giella, KN4LF Retired Space & Atmospheric; /archives//html/Topband/2004-03/msg00325.html (8,580 bytes)
153. Re: Topband: 160m Ant on 80m? (score: 138): Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>; Date: Fri, 16 Apr 2004 14:11:21 -0000; It will certainly radiate and very efficiently BUT it will have a high takeoff angle of maximum radiation. I have a 160-10 meter horizontal doublet up at 40 feet and I flip a switch to make it a tee; /archives//html/Topband/2004-04/msg00114.html (8,150 bytes)
154. Topband: 160 Meter Propagation (score: 138): Author: "Thomas F. Giella KN4LF" <kn4lf@earthlink.net>; Date: Mon, 12 Jan 2009 13:49:42 -0500; Carl K9LA is correct in his assertion that change in height of the ionosphere in the equatorial region during solar minimum does not translate to a change in the height of the mid and high latitude i; /archives//html/Topband/2009-01/msg00104.html (8,441 bytes)
155. Re: Topband: new Cycle 24 prediction (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@verizon.net>; Date: Sat, 09 May 2009 14:21:51 -0500 (CDT); My first solar cycle 24 prediction published at http://www.kn4lf.com/kn4lf72.htm on February 1, 2008 was for a solar cycle 24 peak at a (SSN) smoothed sunspot number of 105 in October 2012. My newest; /archives//html/Topband/2009-05/msg00046.html (7,221 bytes)
156. Re: Topband: T - vertical improvement (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; Date: Wed, 22 Jul 2009 11:05:25 -0400; Around ten or so years ago K4TR and I did allot of experimenting with a long (3/8-1/2 wave) T vertical on 160 meters. We found that not did one not have to extend the radials further as the highest c; /archives//html/Topband/2009-07/msg00093.html (8,076 bytes)
157. Topband: NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-34 (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; Date: Fri, 25 Sep 2009 15:19:10 -0400; The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-34 has been published on Friday 09/25/2009 at 0000 UTC, valid 0000 UTC Saturday 09/26/2009 through 2359 UTC Friday 10/02/2009; /archives//html/Topband/2009-09/msg00114.html (8,729 bytes)
158. Topband: Stew Perry Topband CW Challenge Contest Propagation Forecast (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; Date: Thu, 15 Oct 2009 20:22:19 -0400; The NZ4O Daily LF/MF/HF/6M Frequency Radiowave Propagation Forecast #2009-37 has been published on Thursday 10/15/2009 at 1800 UTC, valid 0000 UTC Saturday 10/17/2009 through 2359 UTC Friday 10/23/20; /archives//html/Topband/2009-10/msg00170.html (8,741 bytes)
159. Topband: 160m in RTTY Contests (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; Date: Thu, 29 Oct 2009 08:10:30 -0400; I'm all for RTTY contests on 160 meters. CW and SSB contests occur on 160 meters so why not digital?! I've been a regular operator on 160 meters for 20 years and have watched the band go from crowded; /archives//html/Topband/2009-10/msg00387.html (8,157 bytes)
160. Re: Topband: Level Playing Field (score: 138): Author: "Thomas F. Giella NZ4O" <nz4o@tampabay.rr.com>; Date: Sat, 31 Oct 2009 08:51:28 -0400; I live on a suburban city lot of just under 1/2 acre with a high QRN level. My transmit antenna is a 1/4 wave coaxial inverted L with a 40 foot vertical section. My receive antenna is an 8 foot diame; /archives//html/Topband/2009-10/msg00448.html (7,619 bytes)

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