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Total 58 documents matching your query.

1. [TowerTalk] 40m add- on spikes question (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Sun May 18 23:19:12 2003
I am curious about the design of the 40m add on spikes attached to the driven elements of some tribanders. Do they use 20m parallel traps, ie coil and capcitor , or are they "Lattin traps" ie simply
/archives//html/Towertalk/2003-05/msg00217.html (6,816 bytes)

2. [TowerTalk] Paint (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Sun Feb 9 16:33:17 2003
POR (USA) products have performed superbly at this seaside location. Very easy to apply. Too busy to search for their website, sorry. 73 Barry end Barry Kirkwood PhD ZL1DD Signal Hill Homestay 66 Cor
/archives//html/Towertalk/2003-02/msg00173.html (6,623 bytes)

3. [Towertalk] 450 line strain relief (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Wed, 1 Jan 2003 21:37:22 +1300
Thanks very much to all who contributed on this topic. Have just emerged from my workshop. 5mm thick rectangular fibreglass plate to which is fitted two saddle = plates made from ordinary fibreglass
/archives//html/Towertalk/2003-01/msg00003.html (7,616 bytes)

4. [Towertalk] F12 C-3E (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Tue, 3 Dec 2002 14:55:49 +1300
Has anybody had an opportunity to compare the Force 12 C3-E with the = other C series with two elements on 10m? Would appreciate any comments. Am considering upgrading my ant to C3E as I expect the e
/archives//html/Towertalk/2002-12/msg00099.html (6,986 bytes)

5. [Towertalk] Spider Web Coil Question (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Thu, 12 Dec 2002 12:18:25 +1300
Would welcome any experiences / opinions on use of spider web coils as = loading/trap inductances at HF. Thought: would be easier to adjust than solenoid coils, if mounted = horizontally less windage
/archives//html/Towertalk/2002-12/msg00353.html (6,679 bytes)

6. [Towertalk] Climbing Stuff (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Tue, 17 Dec 2002 16:12:00 +1300
No expert myself, but some things that I have found useful: (1) www.qsl.net/n1lo An excellent symposium on tower topics, including good links to stuff on = climbing, safety equipment etc. (2) Use a s
/archives//html/Towertalk/2002-12/msg00479.html (7,922 bytes)

7. [Towertalk] Sliding lanyards, ascenders etc. (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Wed, 18 Dec 2002 16:50:17 +1300
I stress I am not an expert. But I do observe arborists and rock climbers using sliding lanyards = (Prusik knots) and ratchet type ascenders a lot. The advantage of the technique as I see it is that
/archives//html/Towertalk/2002-12/msg00519.html (7,261 bytes)

8. [Towertalk] The case for a static line (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Fri, 20 Dec 2002 17:44:43 +1300
The more I read on this, the better the case seems to be for having a = fixed line up and down the tower while working at heights. This is what arborists I have observed do as standard practice. do n
/archives//html/Towertalk/2002-12/msg00574.html (8,958 bytes)

9. [Towertalk] Bowlines etc (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Sat, 21 Dec 2002 07:40:55 +1300
Have done a little sailing myself. Now use figure 8s in climbing applications. Horses for courses. Suggest yachties look at rock climbing web sites to see reasons for = different practice in differen
/archives//html/Towertalk/2002-12/msg00589.html (6,702 bytes)

10. Fw: [Towertalk] The case for a static line (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Sat, 21 Dec 2002 09:14:50 +1300
at suc of or tower.
/archives//html/Towertalk/2002-12/msg00600.html (13,803 bytes)

11. [Towertalk] Knots (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Sat, 21 Dec 2002 15:55:29 +1300
By all means use bowlines on lanyards etc for tower work. I often do = myself. But I humbly suggest you tape the tail to the standing part. Extra half hitches may not be adequate to stop a bowline un
/archives//html/Towertalk/2002-12/msg00609.html (9,412 bytes)

12. [Towertalk] Knots: engage brain, save your life. (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Mon, 23 Dec 2002 19:56:14 +1300
Far be it from me to get in the way of anyone bent on self destruction. But I do feel some moral obligation to correct things which are not only = wrong, but dangerously wrong when they put innocent
/archives//html/Towertalk/2002-12/msg00657.html (9,093 bytes)

13. [Towertalk] 450 ohm ladder line strain relief (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Wed, 1 Jan 2003 11:12:56 +1300
Looking for ideas about strain relief for 450 ohm ladder line (the = plastic ribbon stuff with square holes in it). Like: where one connects it to the centre of a dipole, seems uncouth to = just hang
/archives//html/Towertalk/2002-12/msg00799.html (7,789 bytes)

14. [Towertalk] Quad vs Yagi (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Mon, 18 Nov 2002 22:48:55 +1300
I know of but one comparative study of quads and yagis in the field that = seems to me to meet scientific standards. Cannot remember the reference, but it was in Ham Radio a long time ago. Method: Tw
/archives//html/Towertalk/2002-11/msg00417.html (9,008 bytes)

15. Fw: [Towertalk] Quad vs Yagi (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Tue, 19 Nov 2002 08:02:15 +1300
Further note: i may be in error with exact figure of quad loop gain over dipole. have loaned my w4pv book. sorry about all lower case but typing one hand as large cat insists on being cuddled. 73 end
/archives//html/Towertalk/2002-11/msg00445.html (13,457 bytes)

16. [Towertalk] Dual band dipoles (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Wed, 2 Oct 2002 08:43:39 +1200
I would appreciate information on: (1) Reference to article in QST by J. Lattin on dual band dipoles using = lumped inductance to separate high and low band sections. (2) Ball park value of inductanc
/archives//html/Towertalk/2002-10/msg00034.html (6,945 bytes)

17. [Towertalk] 40m add ons. (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Thu, 4 Jul 2002 08:45:22 -0000
I would like to hear of experience, opinions etc on 40m inductively loaded add ons for tribander driven elements. Am interested in both electrical and mechanical performance. Thanks es 73 Barry end B
/archives//html/Towertalk/2002-07/msg00087.html (6,551 bytes)

18. [Towertalk] Test (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Fri, 5 Jul 2002 09:03:12 -0000
I have a message telling me welcome to Towertalk, but nothing seems to be coming down the line. Could some kind person reply direct to me if this comes up on the list. 73 Barry end Barry Kirkwood PhD
/archives//html/Towertalk/2002-07/msg00092.html (6,367 bytes)

19. [Towertalk] Inv L (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Tue, 9 Jul 2002 23:56:21 -0000
Inverted L does very well on 80 and 40 (will eat any all band vertical on these bands, other things equal). On 40 and 80 it is not too difficult to get full size or top hat verticals operational henc
/archives//html/Towertalk/2002-07/msg00243.html (7,043 bytes)

20. [Towertalk] Inv L (score: 1)
Author: bjk@ihug.co.nz (Barry Kirkwood)
Date: Wed, 10 Jul 2002 04:20:09 -0000
I said all things being equal, and unless I know more about the groundplane arrangements of the L vs the Cushcraft vertical, siting etc can only make general comments. However, on the basis of years
/archives//html/Towertalk/2002-07/msg00258.html (11,358 bytes)


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