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References: [ +from:tonno.vahk@mail.ee: 37 ]

Total 37 documents matching your query.

21. [TowerTalk] The best stacking distance for long-boom yagis - 0.5 wavelength!! (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Fri, 27 Jul 2001 19:15:39 +0300
Forgot to sign the previous mail:) Tonno ES5TV tonno.vahk@mail.ee it 0.5 The db long the than most not many to and the 10 where stack at a fixed report sure w -- FAQ on WWW: http://www.contesting.com
/archives//html/Towertalk/2001-07/msg00553.html (15,747 bytes)

22. [TowerTalk] Optimum Stacking Distance (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Fri, 27 Jul 2001 19:47:45 +0300
Some advice to take the effective boom length of the antenna in wavelengths and take the square root of it. This is the optimum stacking distance of your beams in Wavelength. I think it is way too ge
/archives//html/Towertalk/2001-07/msg00557.html (9,634 bytes)

23. [TowerTalk] The best stacking distance for long-boom yagis - 0.5 wavelength!! (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Sat, 28 Jul 2001 11:36:52 +0300
Thanks, Jiri, for showing up as I hoped. I had this 6/6/6/6 @13/19/25/31m of yours exactly in mind when I pointed out that I might not be the only one stacking them so close. Have you found any diffe
/archives//html/Towertalk/2001-07/msg00599.html (14,777 bytes)

24. [TowerTalk] Optimum Stacking Distance (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Mon, 30 Jul 2001 09:48:16 +0300
As I have found the presence of the undriven antenna is effecting the gain and F/B a lot. Actually in a stack of two the lower undriven antenna decreases the gain of the upper one by about 1db if tur
/archives//html/Towertalk/2001-07/msg00647.html (12,682 bytes)

25. [TowerTalk] The best stacking distance for long-boom yagis - 0.5 wavelength!! (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Mon, 30 Jul 2001 10:00:26 +0300
Actually when I meant to maximize the forward gain then that implied only giving up maybe 5db front to back. Say, from 25 to 20. And usually with those OWA stacks I modelled the F/B got maybe worse o
/archives//html/Towertalk/2001-07/msg00648.html (13,038 bytes)

26. [TowerTalk] How to connect pieces of coax? (score: 1)
Author: T&otilde;nno V&auml;hk" <tonno.vahk@mail.ee (T&otilde;nno V&auml;hk)
Date: Thu, 10 May 2001 20:24:59 +0300
Is it a good idea to make a HF antenna feedline from several shorter pieces of coax by soldering or in any other way connecting them together without proper connectors? Having RG 213 and LDF 4-50A in
/archives//html/Towertalk/2001-05/msg00246.html (8,458 bytes)

27. [TowerTalk] 213/LMR coax splices and 213 vs 214? (score: 1)
Author: Tnno Vhk" <tonno.vahk@mail.ee (Tnno Vhk)
Date: Sun, 13 May 2001 23:33:50 +0300
Thanks to everybody for answers to my LDF 4-50A splicing question. Great ideas really. But splicing two pieces of RG 213 without connectors is also a issue of interest to me. Would it be a very fooli
/archives//html/Towertalk/2001-05/msg00294.html (9,865 bytes)

28. Re: [TowerTalk] Stacking Problem (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Mon, 16 Feb 2004 10:55:20 +0200
Stan, this stack should work! I have 2 fullsize 3 EL yagis (40' boom) stacked at 140' and 70'. It is sometimes difficult to notice sharp effect on RX but on TX the stack is the best 99% of the time!
/archives//html/Towertalk/2004-02/msg00265.html (10,611 bytes)

29. Re: [TowerTalk] antennas in trees (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Mon, 20 Sep 2004 17:27:33 +0300
Just a short note on real life A-B. I have two identical 80m Inverted V Dipoles. Both with 45 feet high apex. One above the roof of the countryside house with some 60 feet of feedline and the other a
/archives//html/Towertalk/2004-09/msg00428.html (9,276 bytes)

30. [TowerTalk] Which grounding panel material? (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Wed, 30 Mar 2005 22:49:37 +0300
Hi, I am refurbishing my shack and want to place a grounding panel into the wall and to bring all my antennas into the shack through it with bulkhead adaptors. Just want some advice. 1. Is copper pla
/archives//html/Towertalk/2005-03/msg00942.html (8,111 bytes)

31. Re: [TowerTalk] Guyed Tower with Dyneema rope guys (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Sun, 8 Jan 2006 20:16:48 +0200
Absolutely agree, I am using Dynamix for guying my 150 feet tower with 2x3 el full size 40m yagis and 4 large tribanders. Dynamix is a combination of Dyneema SK75 and Aramid fibres (Kevlar) used in y
/archives//html/Towertalk/2006-01/msg00171.html (11,742 bytes)

32. [TowerTalk] Overlapping or soldered radials for 4 Square? (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Mon, 20 Nov 2006 22:01:14 +0200
Hi, I have got my full size 1/4 wl aluminium tubing 160m 4 Square up and running with Comtek hybrid coupler. I use basically ground mounted verticals (isolator about 1m from ground) and intend to put
/archives//html/Towertalk/2006-11/msg00430.html (9,357 bytes)

33. Re: [TowerTalk] Overlapping or soldered radials for 4 Square? (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Tue, 21 Nov 2006 10:41:45 +0200
Thanks Tim, I was also adviced to avoid radials crossing if they are not insulated. Well, at the end the difference is small if any, that's true. So as I have insulated wire, I will maybe put still a
/archives//html/Towertalk/2006-11/msg00462.html (12,649 bytes)

34. [TowerTalk] are small loops in beverages bad? (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Tue, 28 Nov 2006 15:53:00 +0200
What do the beverage experts think about fixing the elongated beverage in the forest by running a few turns of the wire around the nail or branch that is used for it's support? Do you think it affect
/archives//html/Towertalk/2006-11/msg00777.html (7,625 bytes)

35. Re: [TowerTalk] are small loops in beverages bad? - Summary (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Tue, 5 Dec 2006 20:46:28 +0200
Thanks to everybody for sharing their thought on wrapping beverage wire around the branch or other support. Great ideas indeed! Nobody said it would matter electrically, many have wrapped them for ye
/archives//html/Towertalk/2006-12/msg00119.html (7,676 bytes)

36. Re: [TowerTalk] 80 meter antenna comparison (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Wed, 30 Jan 2008 10:29:16 +0200
I have right now on 80 meters 3 element coil loaded Optibeam Yagi at 36m height on rotating tower and also full size 4 Square with 64 ground mounted 1/4wl radials per each tube vertical using Comtek
/archives//html/Towertalk/2008-01/msg00559.html (13,747 bytes)

37. Re: [TowerTalk] 3-Stack Tribander Issues (score: 1)
Author: "Tonno Vahk" <tonno.vahk@mail.ee>
Date: Wed, 24 Feb 2010 23:13:17 +0200
I have 4 stack of JP 2000 tribanders on one of my towers. Those are interlaced 10 element beams (3/3/4 elements respectively on 20/15/10) with single feedline and boom of about 7.5 meters. I find the
/archives//html/Towertalk/2010-02/msg00557.html (13,239 bytes)


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