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#1
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I am in the process of installing a Butternut HF6V. The mounting tube of the
HF6V is clamped to a DX Engineering stainless radial plate. See the link below for a photo. http://s48.yousendit.com/d.aspx?id=0...L2JJKV3E19KX6G |
#2
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Dear John Gotwals (N9JG ?):
Great picture! Unfortunately, it is accompanied by a lot of spam, some of which I may need to reboot to get rid of. Please describe the white, solid tube. Does it go into the ground? Did the large U-bolt and the plastic wedges come with the kit? Is the tubular, metal sleeve a splice? Interesting set up. Let us know how things progress. 73 Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Gotwals" wrote in message ... I am in the process of installing a Butternut HF6V. The mounting tube of the HF6V is clamped to a DX Engineering stainless radial plate. See the link below for a photo. http://s48.yousendit.com/d.aspx?id=0...L2JJKV3E19KX6G |
#3
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I would have liked to have attached the picture to my initial posting, but
since this is not a binaries newsgroup, I abstained. I do not yet have a website, so this seemed the best way to make the picture available. The Butternut HF6V is ground mounted by inserting a 1-1/8" X 24" tube (tube A) into the ground to a depth of approximately 21" with about 3" of the tubing above ground. Tube A has a fiberglass insulator inserted in the upper portion of the tube, and in addition to serving as an insulator, it is used as the support for the next antenna tube (tube B). According to the directions, the upper end of the insulator should be about 7" above ground. There are no plastic wedges, but I did clamp tube A to the DX Engineering stainless radial plate which included a wedge made from light metal, probably cast or forged aluminum. This wedge and a stainless u-bolt are used to make an electrical and mechanical attachment between Tube A and the stainless radial plate. I hope I have answered your questions, John, N9JG "J. Mc Laughlin" wrote in message ... Great picture! Unfortunately, it is accompanied by a lot of spam, some of which I may need to reboot to get rid of. Please describe the white, solid tube. Does it go into the ground? Did the large U-bolt and the plastic wedges come with the kit? Is the tubular, metal sleeve a splice? |
#4
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Dear John:
Indeed you have answered my questions. I also re-read the manual on the manufacturer's site. The full nature of "Tube A with insulator" is not clear from the manual. Here is my read-back: "Tube A with insulator" is cylindrical, has a diameter of 1.125 inches, a nominal overall length of two feet, and at the end of "A" that is expected to be above ground is found a fiberglass solid rod that is attached to the bottom part of "A" (composed of an unknown substance) with a metal sleeve having an attachment bolt extending radially therefrom. Do I have it? My curiosity is driven by an interest to use one of these antennas as a receiving antenna at the end of a very long piece of coax. From what you have taught me, the bottom end of "A" probably should go into a cylindrical concrete foundation. (Wind here is unattenuated by trees.) I had been under the impression that the "bottom" of this antenna was to be clamped to a pole that is driven (or set) into the ground. For quite a different reason than learning the nature of the "bottom" of the antenna, when you have the antenna working, please estimate the inside diameter of a hollow cylindrical plastic tube that will be able fully to enclose the antenna (as if the tube was a radome). I have a colleague who is thinking of a "flag pole." From DXEngineering and your comments, I now understand the wedges. Thank you for your assistance. 73 Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Gotwals" wrote in message ... I would have liked to have attached the picture to my initial posting, but since this is not a binaries newsgroup, I abstained. I do not yet have a website, so this seemed the best way to make the picture available. The Butternut HF6V is ground mounted by inserting a 1-1/8" X 24" tube (tube A) into the ground to a depth of approximately 21" with about 3" of the tubing above ground. Tube A has a fiberglass insulator inserted in the upper portion of the tube, and in addition to serving as an insulator, it is used as the support for the next antenna tube (tube B). According to the directions, the upper end of the insulator should be about 7" above ground. There are no plastic wedges, but I did clamp tube A to the DX Engineering stainless radial plate which included a wedge made from light metal, probably cast or forged aluminum. This wedge and a stainless u-bolt are used to make an electrical and mechanical attachment between Tube A and the stainless radial plate. I hope I have answered your questions, John, N9JG "J. Mc Laughlin" wrote in message ... Great picture! Unfortunately, it is accompanied by a lot of spam, some of which I may need to reboot to get rid of. Please describe the white, solid tube. Does it go into the ground? Did the large U-bolt and the plastic wedges come with the kit? Is the tubular, metal sleeve a splice? |
#5
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A plastic rod has been partially inserted into tube A (to a depth of perhaps
6") at the end which is above ground. Tube A and the rod have been drilled at right angles to their axes of symmetry, and a screw has been inserted into the hole, and where the screw protrudes on the opposite side of tube A, a nut has been attached and tightened. When the antenna is constructed, this screw will serve as the junction for one end of a base matching coil (Coil Q) and for the shield from a short length of 75? matching coax (Coax R). The instructions state that tube A can be placed in concrete, but they recommend slightly twisting tube A, while the concrete is setting, for easy removal later. The manual states "in areas of frequent or heavy winds a set of short non-conductive guys should be used to reduce the stresses that wind loading will impart to the lower sections of the antenna." As a first estimate, your friends cylindrical radome will have to have a diameter of at least 6", but I'll know more in a few days. John, N9JG "J. Mc Laughlin" wrote in message ... Dear John: Indeed you have answered my questions. I also re-read the manual on the manufacturer's site. The full nature of "Tube A with insulator" is not clear from the manual. Here is my read-back: "Tube A with insulator" is cylindrical, has a diameter of 1.125 inches, a nominal overall length of two feet, and at the end of "A" that is expected to be above ground is found a fiberglass solid rod that is attached to the bottom part of "A" (composed of an unknown substance) with a metal sleeve having an attachment bolt extending radially therefrom. Do I have it? My curiosity is driven by an interest to use one of these antennas as a receiving antenna at the end of a very long piece of coax. From what you have taught me, the bottom end of "A" probably should go into a cylindrical concrete foundation. (Wind here is unattenuated by trees.) I had been under the impression that the "bottom" of this antenna was to be clamped to a pole that is driven (or set) into the ground. For quite a different reason than learning the nature of the "bottom" of the antenna, when you have the antenna working, please estimate the inside diameter of a hollow cylindrical plastic tube that will be able fully to enclose the antenna (as if the tube was a radome). I have a colleague who is thinking of a "flag pole." From DXEngineering and your comments, I now understand the wedges. Thank you for your assistance. 73 Mac N8TT -- J. Mc Laughlin; Michigan U.S.A. Home: "John Gotwals" wrote in message ... I would have liked to have attached the picture to my initial posting, but since this is not a binaries newsgroup, I abstained. I do not yet have a website, so this seemed the best way to make the picture available. The Butternut HF6V is ground mounted by inserting a 1-1/8" X 24" tube (tube A) into the ground to a depth of approximately 21" with about 3" of the tubing above ground. Tube A has a fiberglass insulator inserted in the upper portion of the tube, and in addition to serving as an insulator, it is used as the support for the next antenna tube (tube B). According to the directions, the upper end of the insulator should be about 7" above ground. There are no plastic wedges, but I did clamp tube A to the DX Engineering stainless radial plate which included a wedge made from light metal, probably cast or forged aluminum. This wedge and a stainless u-bolt are used to make an electrical and mechanical attachment between Tube A and the stainless radial plate. I hope I have answered your questions, John, N9JG "J. Mc Laughlin" wrote in message ... Great picture! Unfortunately, it is accompanied by a lot of spam, some of which I may need to reboot to get rid of. Please describe the white, solid tube. Does it go into the ground? Did the large U-bolt and the plastic wedges come with the kit? Is the tubular, metal sleeve a splice? |
#7
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Yes, the metallic portion of tube A is aluminum.
"J. Mc Laughlin" wrote in message ... Dear John: Thank you. I understand even more about "A." Is it correct to assume that the metallic part of "A" is aluminum? Thank you also for your first estimate of the ID needed to enclose the whole antenna. That is of great help. 73, Mac N8TT -- |
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