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References: [ +from:dj7ww@t-online.de: 172 ]

Total 172 documents matching your query.

21. Re: [TowerTalk] KLM 40m3 element droop (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 24 Jul 2013 02:12:51 +0200
Hi Bob, When mounted right, thick side of the inserts at the center of the elements, a slight upward tilt is still provided. Electically the 30 inch droop does not matter. For esthetical reason you m
/archives//html/Towertalk/2013-07/msg00454.html (8,736 bytes)

22. Re: [TowerTalk] Which Balun with the TH7DXX (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 24 Jul 2013 13:31:48 +0200
Those would have worked with the TH7, but at the time of mounting the TH7 I had no stock of FT240-61. The balun on my TH7 was a coax choke wound on a large 4C65 (~61 mix) Toroid: http://m0.i.pbase.co
/archives//html/Towertalk/2013-07/msg00469.html (9,791 bytes)

23. Re: [TowerTalk] Best coaxial to make Chokes (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 13 Nov 2013 02:28:27 +0100
Any choke is inductive. If not it is no choke at all. 73 Peter Only the coil of coax with no ferrite is a VERY POOR choke because it is inductive, not resistive. _____________________________________
/archives//html/Towertalk/2013-11/msg00223.html (8,013 bytes)

24. Re: [TowerTalk] PST2051D (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 20 Nov 2013 15:41:40 +0100
Yes, the PST2051 is far too small. I have four of them. On all 4 the worm shafts have been pushed out together with their bearing during medium storms. Antenna size was always less then 1 square mete
/archives//html/Towertalk/2013-11/msg00350.html (9,169 bytes)

25. Re: [TowerTalk] Fwd: Limited space for 80 and 50 (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 20 Nov 2013 23:25:53 +0100
Any simple L network isolated from ground is such an animal. 73 Peter As a true balanced tuner frequently is just that, an unbalanced antenna will still cause common mode current in the feed line wit
/archives//html/Towertalk/2013-11/msg00365.html (9,369 bytes)

26. Re: [TowerTalk] Change in SWR (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 4 Dec 2013 02:02:43 +0100
Reading is believing? I am very happy that I own a Mosley beam CL33 and not a Moseley. But if identical yagis are meant, my dipoles probably have far less then one percent efficiency. 73 Peter Before
/archives//html/Towertalk/2013-12/msg00061.html (9,590 bytes)

27. Re: [TowerTalk] Change in SWR (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 4 Dec 2013 04:04:14 +0100
I did not see it but I am always very interested when I hear about yagi comparisons how they managed to measure the main lobes of the different antennas to be meaningful. So, how was that done? 73 Pe
/archives//html/Towertalk/2013-12/msg00067.html (10,086 bytes)

28. Re: [TowerTalk] Clarifying on Mosley (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 4 Dec 2013 05:27:09 +0100
Thank you for the clarification. That doesnīt sound at all as "less gain than a dipole at the same location and height, and over the same path" as somebody insisted. 73 Peter As one of the report aut
/archives//html/Towertalk/2013-12/msg00073.html (9,654 bytes)

29. Re: [TowerTalk] Change in SWR (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 4 Dec 2013 20:31:52 +0100
Yes, especially if the latter owner never collected any qsl card. 73 Peter The success you may or may not have with an antenna has a lot of variables behind it. To say that Honor Roll on a Pro67b mea
/archives//html/Towertalk/2013-12/msg00089.html (9,489 bytes)

30. Re: [TowerTalk] from towers to shack (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Tue, 10 Dec 2013 06:37:46 +0100
I use EPCOS surge arresters everywhere. http://electronicdesign.com/components/stack-component-combines-epcos-surgearresters http://www1.futureelectronics.com/doc/EPCOS/Epcos%20T61-C350X.pdf 73 Peter
/archives//html/Towertalk/2013-12/msg00153.html (15,675 bytes)

31. Re: [TowerTalk] OWA Inventor? (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Fri, 13 Dec 2013 07:00:11 +0100
Antennas with the narrow spaced first directors were standard many years before DL6WU published that for ham radio antennas. I installed TV VHF antennas by Kathrein, Hirschmann and Wisi with closed s
/archives//html/Towertalk/2013-12/msg00245.html (9,866 bytes)

32. Re: [TowerTalk] Discoverer 7-2 or Cushcraft xm-240 (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sun, 16 Mar 2014 00:01:26 +0100
You are saying the gain of the shorty-forty is just 0.5db? 73 Peter All in all, between the coil losses and the directivity, I'd say it is ~4 db better than the shorty-forty in forward gain. That's a
/archives//html/Towertalk/2014-03/msg00091.html (8,905 bytes)

33. Re: [TowerTalk] "Antenna Tuner" (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sun, 4 May 2014 15:59:11 +0200
A lossless quarter-wave monopole has an radiation resistance of 35 ohms. To that all losses will be added and the result is the feed point impedance. That will never have an impedance of 12 ohms but
/archives//html/Towertalk/2014-05/msg00069.html (10,236 bytes)

34. Re: [TowerTalk] Common-mode choke (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Tue, 20 May 2014 19:14:03 +0200
I donīt believe in that higher power rating 73 Peter everywhere... so what am I missing???? You may be blessed with a very quiet location. Good for you. Most of us are not. The high choking Z does tw
/archives//html/Towertalk/2014-05/msg00390.html (9,027 bytes)

35. Re: [TowerTalk] ProSisTel 2051d failure. (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sat, 31 May 2014 18:42:12 +0200
I guess the PST2051 is far too small for that antenna. I own 4 of those rotators for 15 years and it never happened that all 4 were workable, at least one is always damaged. At the beginning I used t
/archives//html/Towertalk/2014-05/msg00528.html (9,030 bytes)

36. Re: [TowerTalk] overhead truss for 80M rotary dipole (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sat, 19 Jul 2014 22:09:14 +0200
Hi Jim, Do you have any data sheets which support that? I do not see the 25% stronger then T6: http://www.allianceorg.com/pdfs/alumext/6061t8.pdf 73 Peter --Original Message-- From: TowerTalk [mailto
/archives//html/Towertalk/2014-07/msg00136.html (8,916 bytes)

37. Re: [TowerTalk] overhead truss for 80M rotary dipole (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Mon, 21 Jul 2014 20:00:26 +0200
Thank you Stan, I found some data as well: http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MA6061T8 http://asm.matweb.com/search/SpecificMaterial.asp?bassnum=MA6061T6 73 Peter I believe thi
/archives//html/Towertalk/2014-07/msg00165.html (11,066 bytes)

38. Re: [TowerTalk] Fwd: freight cost of tower part (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sat, 16 Aug 2014 18:24:21 +0200
Thatīs about the rate for shipping a 180 feet Luso tower from Japan to Germany house to house. 73 Peter I have three (3) 25G sections and one (1) 25AG2 section (the top section) a total of 40 feet..
/archives//html/Towertalk/2014-08/msg00310.html (9,586 bytes)

39. Re: [TowerTalk] short survey (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 27 Aug 2014 19:02:07 +0200
I do, age is 68 in November. 73 Peter My wife wants to know how may of us are still climbing our own tower after age 68. If you don't any longer, please tell when you stopped. (Now I gave my age away
/archives//html/Towertalk/2014-08/msg00461.html (8,339 bytes)

40. Re: [TowerTalk] Sad day - W9ZUC tower accident (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Tue, 23 Sep 2014 15:39:45 +0200
Why repeat it again and again? We know you are the greatest... I have been climbing, free climbing, for 40 years. I never kept track; I probably have easily made at least 1000 climbs or more as a ham
/archives//html/Towertalk/2014-09/msg00330.html (8,965 bytes)


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