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1. Topband: circular polarization on 160m (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Mon, 3 Feb 2014 12:16:37 -0500
I hope everyone has had a chance to work FT5ZM on topband. With respect to circular polarization on our HF bands (3.5 - 28 MHz) and on 6m, theory says both the ordinary and extraordinary waves propag
/archives//html/Topband/2014-02/msg00060.html (8,183 bytes)

2. Re: Topband: circular polarization on 160m (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Wed, 5 Feb 2014 08:13:04 -0500
All, Bah, humbug. We got another 5 inches of snow overnight. We're running out of room to put the snow. At least I can stay inside and play on the radio. Tom makes some good points. Two comments. Fir
/archives//html/Topband/2014-02/msg00077.html (16,574 bytes)

3. Topband: polarization (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Thu, 6 Feb 2014 15:56:04 -0500
It also seems to me that polarization in the ionosphere is a bit fuzzy to many people. First, an HF electromagnetic wave upon entering the ionosphere splits into TWO waves that propagate thru the ion
/archives//html/Topband/2014-02/msg00096.html (8,944 bytes)

4. Re: Topband: Pixel Technologies BevPro-1 Beverage antenna (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Fri, 7 Feb 2014 07:45:17 -0500
Steve W1DXH, In the January 29 Contest Update by N0AX, he mentioned that N3OC did a review of it in the February PVRC newsletter. Carl K9LA _________________ Topband Reflector Archives - http://www.c
/archives//html/Topband/2014-02/msg00098.html (8,100 bytes)

5. Topband: Shared Apex Loop Array (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Sat, 8 Feb 2014 16:12:09 -0500
Terry W7KW, Yesterday I posted a message here about the Shared Apex Loop Array. N3OC's review of it appears in the February PVRC newsletter. My Product Review of it will appear in the April QST. My e
/archives//html/Topband/2014-02/msg00100.html (6,712 bytes)

6. Topband: comparing a vertical to a horizontal loop (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Wed, 12 Feb 2014 16:32:18 -0500
Bill VE3CSK said "I have been listening several evenings now on 160M using my K3 in diversity mode with the TX vertical array on one receiver and a full-wave horizontal loop on the other. The rapid a
/archives//html/Topband/2014-02/msg00166.html (7,372 bytes)

7. Topband: arrival direction of FT5ZM (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Sat, 15 Mar 2014 09:22:37 -0400
Hi everyone, For those of you in North America who worked FT5ZM on 80m and 160m and who have directional receiving antennas, could you send me a personal e-mail ( k9la@arrl.net) stating from which di
/archives//html/Topband/2014-03/msg00108.html (6,603 bytes)

8. Topband: arrival direction of FT5ZM on 160 (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Fri, 21 Mar 2014 22:31:54 -0400
Hi to everyone, A week ago I requested data from NA stations on the azimuth arrival angle of FT5ZM on 160m and 80m. I believe I individually thanked all who responded. But in case I missed someone -
/archives//html/Topband/2014-03/msg00168.html (6,956 bytes)

9. Topband: Rev B of the FT5ZM Direction paper (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Tue, 25 Mar 2014 17:41:22 -0400
I just put Rev B of "Arrival Direction of FT5ZM in North America on 160m" on my web site. For the record, Rev A corrected an error in the original text. Rev B addresses two issues: a problem with Fig
/archives//html/Topband/2014-03/msg00207.html (6,966 bytes)

10. Topband: Rev C of the FT5ZM direction paper (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Sun, 30 Mar 2014 19:18:26 -0400
Let me try this one more time. In a personal e-mail W4ZV said that he believed my statement "For the record, the apex is at the antipode of FT5ZM" is incorrect. The apex referred to is where the sunr
/archives//html/Topband/2014-03/msg00220.html (7,453 bytes)

11. Topband: duo-band 80m/160m antenna (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Tue, 3 Jun 2014 10:13:53 -0400
All, I had a quarter-wave 80m wire vertical (thanks to a pulley under the limb of an 80ft tall oak tree) with three elevated radials. Worked great. I bought a length of 3-inch OD B&W inductor stock a
/archives//html/Topband/2014-06/msg00021.html (7,257 bytes)

12. Topband: doorknob caps (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Tue, 3 Jun 2014 10:55:48 -0400
Bill, I used four 75pF 5kV caps (I think I bought them from the local surplus shop when it existed). I put two in parallel, and in series with that were the other two in parallel. Thus it was a 75pF/
/archives//html/Topband/2014-06/msg00024.html (6,498 bytes)

13. Topband: losses on 160m (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Thu, 21 Aug 2014 17:51:05 -0400
Rik van Riel asked: "One big question is, where does the path loss on top band come from?" Per our current understanding of the lower ionosphere, the loss due to absorption on 160m in the lower ionos
/archives//html/Topband/2014-08/msg00235.html (7,148 bytes)

14. Topband: details about the WFAN skywave plot (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Sat, 14 Feb 2015 14:27:16 -0500
The E region critical frequency at night is around 0.45 MHz. That says any elevation angle less than about 45 degrees at 660 KHz does not get through the E region. The skywave plot showing the 0.25 m
/archives//html/Topband/2015-02/msg00428.html (8,202 bytes)

15. Topband: verticals by the sea (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Thu, 2 Apr 2015 18:55:18 -0400
Just an FYI with respect to verticals by the sea. In the Sep/Oct 2006 issue of NCJ he essentially did the same for ground conditions other than salt water. The title of this article was "Determining
/archives//html/Topband/2015-04/msg00040.html (7,524 bytes)

16. Re: Topband: Zone 2 on 160m (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Thu, 17 Sep 2015 13:44:37 -0400
Steve, For what it's worth, VB2T will be a multi-single from Zone 2 for CQ WW SSB this year. You can see this at http://www.ng3k.com/Misc/cqs2015.html. Haven't seen any Zone 2 plans yet for CQ WW CW.
/archives//html/Topband/2015-09/msg00086.html (7,060 bytes)

17. Re: Topband: Strange propagation (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Wed, 13 Jan 2016 21:26:57 -0500
Ed N1UR said "It seems non-trivial to me as to how to maintain these remote stations." My guess is it was someone using the Portland, OR station in the Remote Ham Radio network (http://www.remotehamr
/archives//html/Topband/2016-01/msg00218.html (7,760 bytes)

18. Re: Topband: strange propagation (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Thu, 14 Jan 2016 07:57:59 -0500
Everyone, I stand corrected with respect to the ownership of the RHR stations. But the main point is that Tree's observation was likely a remote station (the one in Portland, OR being most likely), a
/archives//html/Topband/2016-01/msg00221.html (7,910 bytes)

19. Topband: RDF in the real-world (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Fri, 4 Mar 2016 09:07:03 -0500
I believe the issue is that RDF is a theoretical calculation comparing the main lobe gain to the overall average gain. The overall average gain essentially results in the assumption that noise is com
/archives//html/Topband/2016-03/msg00055.html (8,151 bytes)

20. Topband: Stew (score: 1)
Author: Carl Luetzelschwab <carlluetzelschwab@gmail.com>
Date: Sun, 13 Mar 2016 09:52:41 -0400
Let me see if I understand this. Someone is complaining that other ops are not upholding the concept of 160-Meters being the "gentleman's band", and that same person who is complaining uses cut lette
/archives//html/Topband/2016-03/msg00138.html (6,709 bytes)


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