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Total 167 documents matching your query.

141. Topband: nonlinear attenuation along signal path (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Thu, 19 Feb 2009 07:32:55 +0100
Hi reflectees ! Another frustrating experience led me towards some more thinking about why some signal seem to take a deep dive on the "last mile" and become inaudible. There are three major examples
/archives//html/Topband/2009-02/msg00108.html (7,663 bytes)

142. Topband: VK9GMW- the rite attitude (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Fri, 10 Apr 2009 07:12:12 +0200
Hi reflectees ! George`s words are rite after my taste. All of us have experienced Dxpeds that simply blew the job on 160. Mostly explainable by their thirst to bring home as many QSOs as possible fo
/archives//html/Topband/2009-04/msg00027.html (7,167 bytes)

143. Topband: KH6 to EU past sunrise (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Sat, 3 Oct 2009 12:20:24 +0200
Dear reflectees ! The mag-field was very quiet last nite and cndx to westcoast were great. I made an interesting contact with KH6AT-Bruce on 160m. My sun was up for about 15 min then and he was very
/archives//html/Topband/2009-10/msg00046.html (6,887 bytes)

144. Topband: K4M on topband from west EU (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Wed, 21 Oct 2009 09:50:20 +0200
Hi reflectees ! My ears are still ringing from the noise i had to endure while waiting for K4M, 3D2,3D2C to come out of the noise on 160. Hours were spent to no avail. But its just bare physics. West
/archives//html/Topband/2009-10/msg00250.html (7,837 bytes)

145. Topband: 600m beacon at DF2PY (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Thu, 5 Nov 2009 06:08:54 +0100
Hi reflectees ! I am not sure whether its OK to post this info here. But lately I saw an info about 600m beacon stations from Canada appear on this reflector. I have put a 600m beacon on the air with
/archives//html/Topband/2009-11/msg00158.html (7,692 bytes)

146. Topband: 3 el in line array/broadside (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Fri, 26 Mar 2010 05:09:49 +0100
Hi friends in radioland ! I am in the process of setting up three verticals spaced ¼ wave in line and plan to feed with equal phase for broadside radiation. Supposedly the broadside lobe drops anothe
/archives//html/Topband/2010-03/msg00145.html (6,536 bytes)

147. Topband: TL on 160 (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Sun, 25 Apr 2010 08:29:33 +0200
Hello reflectees ! According to TL0A / Chris, there will be an activation of TL on 160m from May 12th to May 28th. gl everyone de wolf df2py _______________________________________________ UR RST IS
/archives//html/Topband/2010-04/msg00087.html (6,529 bytes)

148. Topband: List of 160m silent keys (score: 1)
Author: "Wolf Ostwald" <df2py@t-online.de>
Date: Fri, 4 Feb 2011 14:26:37 +0100
Dear reflectees ! As i just read about the passing of W2JB, with whom I had my first 160m DX-QSO, i feel like after a few weeks nobody really cares any more. But many of us have fond memories, regard
/archives//html/Topband/2011-02/msg00043.html (7,025 bytes)

149. Topband: angle of radiation vs. phys. height (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sat, 12 Mar 2011 13:48:51 +0100
Hi ! I may have missed previous threads abot this topic. Is there some proven knowledge about this around here ? Question is, does some physical height exist, from which the desired angles are vanish
/archives//html/Topband/2011-03/msg00045.html (6,530 bytes)

150. Topband: 1/2 wave spacing (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Wed, 23 Nov 2011 06:36:39 +0100
Hi reflectees ! I currently have the setup to try 3el in line against 2 el halfwave spaced broadside. I run this comparingly for about two years now and my findings are : the broadside radiation from
/archives//html/Topband/2011-11/msg00219.html (7,284 bytes)

151. Topband: 1/2 wave spacing vs. 1/4 wave (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Wed, 23 Nov 2011 19:21:48 +0100
hi reflectees ! I guess i was not specific enough. I was stating that my 2 el broadside array`s signal with 1/2 spacing must have lower angle of radiation than my 3 el 1/4 wave spacing in line array.
/archives//html/Topband/2011-11/msg00229.html (7,364 bytes)

152. Topband: ARRL 160 viewed from EU (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sun, 04 Dec 2011 18:28:40 +0100
hi reflectees ! This years ARRL160 did not yield the propagation we had last year. There was an unpenetrable curtain from VE2 thru the great plains down to the rocky mountain division. At least true
/archives//html/Topband/2011-12/msg00046.html (7,265 bytes)

153. Topband: Patience in ARRL 160 CW (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Wed, 05 Dec 2012 06:19:44 +0100
Hi ! For all those who are complaining about noise and QSB in the recent test, i strongly recommend to do this contest from Europe. Then You know what QSB really means. It took me 6 hrs to get a mere
/archives//html/Topband/2012-12/msg00154.html (6,667 bytes)

154. Topband: Sensor lamps cure (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sun, 20 Jan 2013 18:59:09 +0100
hi reflectees! i had sensor lamp problems right in my home. The only cure i found for them is using E-Type ferrite chokes. The chokes avoid the internal oscillator energy being fed into the mains, pl
/archives//html/Topband/2013-01/msg00148.html (6,829 bytes)

155. Topband: solarwind and 160 prop (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Wed, 23 Jan 2013 06:24:17 +0100
hi reflectees ! As we all know, the effects of the solar wind are strongly determining 160m propagation. It seems that solely watching A and K indexes plus the SFI is not helping much in propagation
/archives//html/Topband/2013-01/msg00156.html (6,895 bytes)

156. Topband: ACE real time solar wind pages (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Thu, 24 Jan 2013 07:22:34 +0100
hi all ! Thanks much for all the responses. The easiest to comprehend graphics i found are here : http://www.swpc.noaa.gov/SWN/ It has a three picture window called "ACE real time solar wind pages" T
/archives//html/Topband/2013-01/msg00171.html (7,141 bytes)

157. Topband: Isolation of tower to antenna (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Mon, 16 Dec 2013 20:00:40 +0100
hi ! for years i ran a shunt fed tower with a 6 el 20m yagi on top as a tx antenna for 160. I made sure that the antenna was well connected to the tower and nothing happened. Instead of trying to fin
/archives//html/Topband/2013-12/msg00176.html (7,720 bytes)

158. Topband: lack of activity on TB from left coast (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sat, 28 Dec 2013 09:54:16 +0100
hny to everybody on the reflector ! today we saw real good condx to the western US here from central EU. But i guess the word did not spread fast enough. I sure was missing all the " clear channel st
/archives//html/Topband/2013-12/msg00243.html (7,395 bytes)

159. Topband: Cndx ARRL 160 frm Europe (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sun, 07 Dec 2014 11:38:07 +0100
hello there reflectees ! the contest was fun , even under cndx lower than desired. Solar activity fired an AU-Index at 5 with a pretty strong solar wind. Expexting not much i had set my operating tim
/archives//html/Topband/2014-12/msg00091.html (7,484 bytes)

160. Topband: vertical balun (score: 1)
Author: "Dr. Wolf Ostwald" <df2py@t-online.de>
Date: Sat, 30 May 2015 19:12:38 +0200
Hello Bob ! a balun is absolutely the wrong thing to use. It supposes that both sides on the balanced side have the same impedance to ground. That definitely is not the case with a vertical and a gro
/archives//html/Topband/2015-05/msg00047.html (7,897 bytes)

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