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1. Re: Topband: Antenna Question (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sat, 4 Jul 2009 14:58:23 -0400
Not sure how tall the tree is or how high the house, but you may want to check out the half-square antenna (also known as an inverted U) on 10, 15, or 20. It gives a few db of gain and puts out a ver
/archives//html/Topband/2009-07/msg00008.html (9,819 bytes)

2. Re: Topband: Power Line Noise (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Tue, 22 Dec 2009 22:53:41 -0500
Steve -- Sounds awful. Check out the article in the September 1995 QST, "A Receiving Antenna that Rejects Local Noise," by K6STI, and the companion, "A K6STI Low-Noise Receiving Antenna for 80 and 16
/archives//html/Topband/2009-12/msg00254.html (9,847 bytes)

3. Re: Topband: RX Antenna (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Mon, 21 Feb 2011 20:50:46 -0500
I'm in the same situation: A small suburban lot, with no room for a beverage, but some trees to support pennants, flags, etc. At the moment, I'm using a pennant to separate Saudi Arabia on 1521 AM fr
/archives//html/Topband/2011-02/msg00168.html (8,783 bytes)

4. Re: Topband: Sudden Ionospheric Disturbances (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sat, 26 Feb 2011 14:33:36 -0500
I've also seen on the BCB that a very short distance can seem to make a considerable difference. Sometimes one station in France is relatively good here in Maryland, the others very poor. Or London o
/archives//html/Topband/2011-02/msg00183.html (9,504 bytes)

5. Re: Topband: Beverages near the ocean (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Thu, 21 Apr 2011 22:40:01 -0400
I think BCB DXers have used them on the coast many times with great results. From what I recall about beverage antenna theory, there may be a problem if the earth underneath is too highly conductive
/archives//html/Topband/2011-04/msg00072.html (8,845 bytes)

6. Re: Topband: high take-off angle (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 16 Oct 2011 16:19:20 -0400
In QST for September 1995, Brian Beezley, K6STI, had an article titled "A Receiving Antenna That Rejects Local Noise" and Ed Andress had a companion article, "A K6STI Low-Noise Receiving Antenna for
/archives//html/Topband/2011-10/msg00112.html (10,162 bytes)

7. Topband: Flag/Pennant Question (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 27 Nov 2011 20:59:05 -0500
I'm wondering if anyone has ever built or modeled a multi-turn flag or pennant antenna. I'm thinking maybe an odd number of turns with the resistor in the middle of the middle turn. Thanks. --Art Del
/archives//html/Topband/2011-11/msg00267.html (6,360 bytes)

8. Re: Topband: Flag/Pennant Question (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Tue, 29 Nov 2011 21:25:49 -0500
I was wondering whether it might produce a narrower pattern in the front, or a deeper null off the back, or maybe even both. But indications from two people who have either modeled it or built it are
/archives//html/Topband/2011-11/msg00283.html (8,671 bytes)

9. Re: Topband: "Artificial" Propagation...? (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 11 Mar 2012 07:59:01 -0400
As I remember the earlier project, it was an effort in the early or mid 1960s to create perpetual worldwide twilight by shooting millions of tiny copper needles into the upper atmosphere. I remember
/archives//html/Topband/2012-03/msg00019.html (10,208 bytes)

10. Re: Topband: "Artificial" Propagation...? (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 11 Mar 2012 15:21:03 -0400
Thanks John. There's an interesting article about Project West Ford on Wikipedia, which describes the failed 1961 launch (the one I remember), and the successful 1963 launch. Apparently, radio astron
/archives//html/Topband/2012-03/msg00022.html (10,900 bytes)

11. Re: Topband: how to hear through static crashes? (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Tue, 27 Mar 2012 20:02:57 -0400
Here's an idea that I wonder if anyone has ever tried. Being an impulse, the lightning crash is essentially the same on all nearby frequencies. Would it be possible to tune a second receiver to an em
/archives//html/Topband/2012-03/msg00252.html (10,595 bytes)

12. Re: Topband: Receiving loops (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sat, 16 Jun 2012 10:36:04 -0400
Tim -- If the suggestions from others don't entirely do the trick, here's another thing to consider: The outer conductor on your coax might be picking up local noise and/or destroying the pattern of
/archives//html/Topband/2012-06/msg00119.html (9,791 bytes)

13. Re: Topband: Receiving loops (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 17 Jun 2012 16:09:25 -0400
Thanks. I wasn't referring to a magnetic loop that uses the shield for pickup. I was referring to the outer shield on the coax that runs from any antenna to the shack. If you use an antenna that was
/archives//html/Topband/2012-06/msg00143.html (12,679 bytes)

14. Re: Topband: RX epiphany? (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Thu, 13 Sep 2012 19:44:46 -0400
Bob-- Just curious -- How is your reception around sunrise, when most of the thunderstorms in the Americas are in daylight, and therefore their QRN probably isn't reaching you? Art, KB3FJO __________
/archives//html/Topband/2012-09/msg00080.html (9,942 bytes)

15. Re: Topband: K6STI low noise receive loop (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Tue, 2 Oct 2012 22:45:04 -0400
Maybe I'm the only guy on the list that actually built one of these antennas. I used it for 90-meter BC DX, and the results were spectacular. Background noise dropped to a very low level, and I could
/archives//html/Topband/2012-10/msg00107.html (11,123 bytes)

16. Re: Topband: Long Daytime Propagation (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Tue, 9 Oct 2012 05:49:51 -0400
In the 1960s, when I was studying such things, I saw a paper by some researchers who had set up very low-angle transmitting and receiving antennas on a low frequency and achieved long-distance propag
/archives//html/Topband/2012-10/msg00202.html (10,219 bytes)

17. Re: Topband: Not so Boring report (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 9 Dec 2012 07:14:05 -0500
Interesting to see this report. A few years ago, OH2BO wrote on this reflector that for DX signals traveling through the polar regions, he watches the solar wind, and expects very good conditions whe
/archives//html/Topband/2012-12/msg00265.html (8,859 bytes)

18. Topband: Good Conditions Tonight on 160? (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Sun, 23 Dec 2012 20:14:08 -0500
FYI, this is an unusually good night on the upper end of the AM broadcast band, with a great signal from Kuwait on 1548. Topband afficianados may want to check out conditions. _______________________
/archives//html/Topband/2012-12/msg00570.html (6,602 bytes)

19. Re: Topband: Boring moderator message (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Mon, 24 Dec 2012 17:35:26 -0500
As last night's primary offender, I apologize to all -- I was in such a hurry to get the news out about the incredible opening that I just forgot to add my callsign and QTH. I hope anyone who was in
/archives//html/Topband/2012-12/msg00581.html (8,965 bytes)

20. Re: Topband: solarwind and 160 prop (score: 1)
Author: Arthur Delibert <radio75a3@msn.com>
Date: Wed, 23 Jan 2013 06:38:30 -0500
Check out this website: http://www.swpc.noaa.gov/SWN/ --Art Delibert, KB3FJO _________________ Topband Reflector
/archives//html/Topband/2013-01/msg00158.html (8,436 bytes)

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