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References: [ 15 ]

Total 15 documents matching your query.

1. [TowerTalk] 20m and 10m interaction (score: 1)
Author: (henry)
Date: Sun, 05 Dec 1999 18:01:14 -0800
I put up a 6L 10m mono on a 24ft boom above a 4L 20m mono on a 42 ft boom. The SWR of each hasn't changed and both play very well. How do I tell if these antennas are interacting in a negative way? W
/archives//html/Towertalk/1999-12/msg00080.html (7,330 bytes)

2. [TowerTalk] Shunt feeding and stacked antennas (score: 1)
Author: (henry)
Date: Mon, 11 Oct 1999 21:50:24 -0700
I have 90 ft of 45g and all the stuff to shunt feed it for 160m. My question involves the interaction of the other antennas. As it sits, the tower has a 2l 40m at 105ft and a 4l long boom 20m at 91ft
/archives//html/Towertalk/1999-10/msg00309.html (7,533 bytes)

3. [TowerTalk] Big boy controllers and computers (score: 1)
Author: (henry)
Date: Sat, 16 Oct 1999 00:34:18 -0700
I took the plunge and bought a Big Boy rotor. The name fits, it's BIG. The control box, with the exception of the cheesey toggle switch for direction control (already replaced) is a work of craftmans
/archives//html/Towertalk/1999-10/msg00450.html (7,367 bytes)

4. [TowerTalk] computer controling big boy rotor (score: 1)
Author: (henry)
Date: Wed, 20 Oct 1999 21:55:51 -0700
I have a big boy rotor and the control box with a db-9 port on the back. Is anyone controling this rotor with their computer? How are you doing the interface? end Henry KB7RTA -- FA
/archives//html/Towertalk/1999-10/msg00625.html (6,963 bytes)

5. [TowerTalk] Bird Antenna Analyzer (score: 1)
Author: (henry)
Date: Mon, 06 Sep 1999 19:10:23 -0700
I was at the Bird page looking for something else and ran across this product. The model number of the one useable in the hf-vhf ham bands is the AT-100. It looks a bunch like the CIA. Anyone have an
/archives//html/Towertalk/1999-09/msg00158.html (7,487 bytes)

6. [TowerTalk] Resonant frequency change as the antenna gains altitude (score: 1)
Author: (henry)
Date: Sat, 18 Sep 1999 20:42:46 -0700
Does a beam's SWR minimum raise or lower in frequency as the beam goes from low (5-6 feet) to the final height (one wave length)? end Henry KB7RTA -- FAQ on WWW: http://www.contesti
/archives//html/Towertalk/1999-09/msg00431.html (7,030 bytes)

7. [TowerTalk] rotors (score: 1)
Author: (henry)
Date: Mon, 16 Aug 1999 20:53:44 -0700
I'm stuck trying to figure out what to do. I have a create RC5-3 turning a long boom 4l long boom 20m and a 2 l shorty 40. I know it's too small, but I thought it was a RC5A-3 when it was given to me
/archives//html/Towertalk/1999-08/msg00265.html (7,364 bytes)

8. [TowerTalk] 48ft tower (score: 1)
Author: (henry gillow-wiles)
Date: Thu, 01 Jul 1999 22:16:25 -0700
There was a bit of talk about a 48ft. free standing tower on sale lately. I checked the archives and couldn't find the details. Anyone remember this? end Henry KB7RTA -- FAQ on WWW:
/archives//html/Towertalk/1999-07/msg00014.html (7,330 bytes)

9. [TowerTalk] surface area of 45g (score: 1)
Author: (Henry)
Date: Sat, 24 Jul 1999 16:33:59 -0700
To do some begining calculations, I need a few dimensions. The projected surface area of Rohn 45g (and 25g, to save me from having to ask again), like square inches of surface area for 1 foot of towe
/archives//html/Towertalk/1999-07/msg00420.html (7,330 bytes)

10. [TowerTalk] stacking tri-banders (score: 1)
Author: (henry gillow-wiles)
Date: Tue, 22 Jun 1999 23:45:38 -0700
I have to opportunity to stack 3 TH7 DX tribanders. 3 questions: First, what's the general rule for stacking tri-banders seperation wise? Second, what kind of gain improvement can I expect from a sin
/archives//html/Towertalk/1999-06/msg00261.html (7,538 bytes)

11. [TowerTalk] 40-2CD (score: 1)
Author: (henry gillow-wiles)
Date: Fri, 08 Jan 1999 22:39:02 -0800
I'm looking for the L and C used in the CC 40-2CD. I'm trying to model the thing, using nec4win. tnx...... end Henry KB7RTA -- FAQ on WWW:
/archives//html/Towertalk/1999-01/msg00145.html (6,662 bytes)

12. [TowerTalk] 80m rotatable dipole (score: 1)
Author: (henry gillow-wiles)
Date: Wed, 30 Dec 1998 22:40:05 -0800
I have a chance to put a 80m roto dipole on the big tower. It will have to go some where on 18ft of mast along with a CC shorty 40 and a 4 ele DX engineering 20m. Right now the 20m is at the top of t
/archives//html/Towertalk/1998-12/msg00490.html (7,743 bytes)

13. [TowerTalk] coiled coax baluns (score: 1)
Author: (henry gillow-wiles)
Date: Sun, 08 Nov 1998 22:39:07 -0800
This was requested by someone on the list. I use coiled baluns on a th7 and a cc 40-2cd with grat results. I blew up the original balun from the th7 and lost a bencher balun on the 40m to water infil
/archives//html/Towertalk/1998-11/msg00218.html (15,754 bytes)

14. [TowerTalk] traming technique (score: 1)
Author: (henry gillow-wiles)
Date: Tue, 13 Oct 1998 21:00:23 -0700
I attach a tiller to the boom plate with vise grips. The tiller points down. This gives me steering ability. If I pull toward the tower, the elements rotate higher on the tower side and visa versa. I
/archives//html/Towertalk/1998-10/msg00396.html (7,298 bytes)

15. [TowerTalk] stacking 20m beams (score: 1)
Author: (henry gillow-wiles)
Date: Sat, 24 Oct 1998 22:08:15 -0700
I have a 4ele 20m monobander at 90ft. I have another 17m 4 ele monobander that I can make into a 20m and mount on the tower somewhere below the first beam. Can I get enough seperation to make it wort
/archives//html/Towertalk/1998-10/msg00865.html (7,565 bytes)

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