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

Total 186 documents matching your query.

121. Topband: Tee Antenna (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Wed, 24 Sep 2003 09:18:52 -0400
I have been using "elevated highest current" Tee antennas for a good while and they are great performers. I designed mine to place the highest current point midway up the 80 foot vertical section. Th
/archives//html/Topband/2003-09/msg00114.html (7,382 bytes)

122. Topband: Trees As RF Absorbers & Antennas (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Mon, 13 Oct 2003 10:14:26 -0400
The possible negative absorptive effects of locating an antenna transmitting setup for 160 meters in a dense forest would be very difficult to measure. If the antenna feedpoint impedance changes when
/archives//html/Topband/2003-10/msg00064.html (7,770 bytes)

123. Topband: Topband Propagation (score: 146)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Tue, 14 Oct 2003 11:12:31 -0400
Per W0AH's query: I have the following on my propagation website at http://www.kn4lf.com/kn4lf5.htm . Read #4 and #5. Here are some general guidelines concerning correlation of propagation indices to
/archives//html/Topband/2003-10/msg00080.html (10,330 bytes)

124. Topband: Propagation Between MN and Germany (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Tue, 14 Oct 2003 17:39:44 -0400
Ford N0FP Said: .....I'm in Minnesota. When the 'red' regions of the oval are north of Winnipeg, chances are good that I'll be able to at least hear Western EU. But that's not the whole picture. I ha
/archives//html/Topband/2003-10/msg00082.html (8,726 bytes)

125. Topband: X 18+ Super Solar Flare (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Tue, 28 Oct 2003 09:44:27 -0500
An X18+ solar flare occurred this morning. It appears to be the second largest flare of cycle 23. Solar flares of this magnitude are rare and this event can be considered historic and a threat to pow
/archives//html/Topband/2003-10/msg00159.html (11,306 bytes)

126. Topband: New X Class Flare and Radio Blackout (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Sun, 2 Nov 2003 12:28:00 -0500
As of approximately 1710 UTC today we are experiencing a new huge X8+ class solar flare and associated shortwave blackout on the sun light side of Earth centered on the America's. D layer absorption
/archives//html/Topband/2003-11/msg00015.html (9,112 bytes)

127. Topband: X40+ ? Super Solar Flare (score: 146)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Tue, 4 Nov 2003 15:52:47 -0500
It appears that the x-ray flux sensors became saturated by this latest super solar flare. Because of the duration saturation of the sensors this super solar flare probably exceeded X30-40 and has pro
/archives//html/Topband/2003-11/msg00019.html (10,821 bytes)

128. Topband: Re: Topband WWRB Spur On 1805 KC (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Wed, 5 Nov 2003 10:30:25 -0500
Tom, I can hear the spur from WWRB on 1805 kc in the evenings here in west central Florida. It creates problems for me when I work PSK31 on 1807 kc. I visited the WWRB station in Copper Hill, TN a lo
/archives//html/Topband/2003-11/msg00030.html (8,831 bytes)

129. Topband: Renewed Solar Flaring Expected (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 13 Nov 2003 10:23:19 -0500
After the previous record active two week period of solar, space and geomagnetic weather I took the opportunity to ignore it all while all was relatively quiet during the past week plus. The minor Kp
/archives//html/Topband/2003-11/msg00099.html (9,592 bytes)

130. Topband: Calling On 1810 kc +1500 hz PSK31 (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 20 Nov 2003 06:27:41 -0500
Hi Mike and All, Forgot to mention in my last email that another geomagnetic storm was imminent. Well it began at 0745 UTC. The Kp is 6 headed to 7 and we have an elevated energetic proton event of >
/archives//html/Topband/2003-11/msg00155.html (8,007 bytes)

131. Topband: Renewed Severe Geomagnetic Storming (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 20 Nov 2003 11:46:31 -0500
Will it ever end? Yes in another year or so. As all radio enthusiasts know band conditions from LF, MF to HF have been fair at best and very poor at worst for many days, thanks to recurrent Coronal H
/archives//html/Topband/2003-11/msg00160.html (11,924 bytes)

132. Topband: Visible Aurora In Central Florida (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 20 Nov 2003 20:36:43 -0500
I saw visible Aurora to my NNW between 2325 11/20/03 and 0040 UTC 11/21/03. I'm located in west central Florida in Plant City, latitude 27 58 31.44N 82 09 51.98 W. The visible Aurora had a pinkish re
/archives//html/Topband/2003-11/msg00162.html (10,433 bytes)

133. Topband: Budget Rig Performance (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Wed, 26 Nov 2003 23:38:27 -0500
Paul, Check out the Yaesu FT-840, it has an excellent receiver on 160. I have three broadcast band radio stations nearby, one of which is a 50 kw station only 5.4 miles away. The only transceiver tha
/archives//html/Topband/2003-11/msg00194.html (7,657 bytes)

134. Topband: Re: 160M From WH0 Land (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Mon, 1 Dec 2003 10:42:48 -0500
Hi Rick, Very nice to hear from you. I think the guys on 160 would appreciate your operation from the Northern Mariana Islands. Yes it's the ARRL 160 meter contest coming up on 12/5-7/03. I will forw
/archives//html/Topband/2003-12/msg00002.html (7,867 bytes)

135. Topband: MF AM Broadcast Band Databases (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 11 Dec 2003 18:07:48 -0500
Try these. http://svartifoss2.fcc.gov/prod/cdbs/pubacc/prod/sta_sear.htm http://www.fccinfo.com/ http://www.radio-locator.com/ http://www.geocities.com/amlogbook/main.htm 73 & Happy Holidays, Thomas
/archives//html/Topband/2003-12/msg00117.html (8,316 bytes)

136. Topband: 80 Meter L on 160 Meters (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Sat, 20 Dec 2003 16:23:38 -0500
Ron W9MAF Asked: .....If I install a full-size 1/4 wave 80 meter vertical and also use it for a 160 meter inverted-L, with 120 radials each 40 meters long to solve the near field ground loss problem,
/archives//html/Topband/2003-12/msg00168.html (8,198 bytes)

137. Re: Topband: Global Lightning Map (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Mon, 22 Dec 2003 09:42:34 -0500
Brian VE3MGY Asked: Does anyone have a site for a real time global lightning map? The one I used to use to is no longer on the web. Its always nice to know where your QRN is coming from! 73 & Happy H
/archives//html/Topband/2003-12/msg00185.html (9,010 bytes)

138. Topband: FYI Good 160 Propagation Condx Tonight (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Tue, 30 Dec 2003 18:10:06 -0500
Just an FYI, I was checking space weather indices earlier and saw the following values. Solar flux is down to 108, the Kp index is bouncing between 1 and 3, background solar flux has been in the low
/archives//html/Topband/2003-12/msg00310.html (8,054 bytes)

139. Topband: Daily MF Radio Propagation Outlooks (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Thu, 1 Jan 2004 23:20:13 -0500
In 2003 I decided to expand my daily MF radio propagation outlook to cover HF. However it became a case of duplication with NW7US Thomas Hood's excellent HF propagation outlooks, as well as Tad Cook'
/archives//html/Topband/2004-01/msg00021.html (8,683 bytes)

140. Topband: Improving Topband Conditions?! (score: 138)
Author: "Thomas Giella KN4LF" <kn4lf@tampabay.rr.com>
Date: Mon, 16 Feb 2004 22:20:37 -0500
On my "KN4LF MF Radio Propagation Theory Notes" website at http://www.kn4lf.com/kn4lf8.htm is posted the following: ..........15.) Sudden Stratospheric Warming (STRATWARM ALERT)- Sudden stratospheric
/archives//html/Topband/2004-02/msg00263.html (17,145 bytes)

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