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#1
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I received this request from a VE ham.
"What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In your personal experience, how long must the wires be to operate on said freqs. I am using an old ts-820 only. I need to build it quick to listen in on the upcoming Field day this June 23-24, 2007." Thought I would ask here for opinions Thanks Lamont |
#2
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The Shadow wrote:
I received this request from a VE ham. "What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In your personal experience, how long must the wires be to operate on said freqs. I am using an old ts-820 only. I need to build it quick to listen in on the upcoming Field day this June 23-24, 2007." Thought I would ask here for opinions Thanks Lamont Hi Lamont, the definition of a true long wire is a minimum of 1 wavelength at the lowest operating frequency. that would be about 256 feet for 80 Meters. Though a shorter length will work many hams use a random wire that is cut for a 1/2 wave on 80m about 136 feet or so and use it for 80 thru 10 Meters. however that antenna is not a true longwire until you get up to 40 Meters and above. Long wire are usually end fed with Open wire feeders and a balanced matching system. they can be very good antennas if mounted horizontal as high as possible above ground. Hope this is of help 73 Dave Kc1di P.S. A search of the internet will give you much info on Longwire antennas some good some not so good. |
#3
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![]() "kc1di" wrote in message ... The Shadow wrote: I received this request from a VE ham. "What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In your personal experience, how long must the wires be to operate on said freqs. I am using an old ts-820 only. I need to build it quick to listen in on the upcoming Field day this June 23-24, 2007." Thought I would ask here for opinions Thanks Lamont Hi Lamont, the definition of a true long wire is a minimum of 1 wavelength at the lowest operating frequency. that would be about 256 feet for 80 Meters. Though a shorter length will work many hams use a random wire that is cut for a 1/2 wave on 80m about 136 feet or so and use it for 80 thru 10 Meters. however that antenna is not a true longwire until you get up to 40 Meters and above. Long wire are usually end fed with Open wire feeders and a balanced matching system. they can be very good antennas if mounted horizontal as high as possible above ground. Hope this is of help 73 Dave Kc1di P.S. A search of the internet will give you much info on Longwire antennas some good some not so good. Thanks very much I shall pass it along Any advice as to wire guage? I have used lamp cord in the past. Lamont |
#4
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In article ,
"The Shadow" wrote: Thanks very much I shall pass it along Any advice as to wire guage? I have used lamp cord in the past. Lamont for simple, quick and dirty End Feed Wire antenna's, head down to your local Electrical Supply House and get a 500" Spool of #14 or #16 Stranded Wire for $5.00US, and have yourself a good time stringing it up in the trees. |
#5
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You wrote:
The Shadow wrote: Thanks very much I shall pass it along Any advice as to wire guage? I have used lamp cord in the past. Lamont for simple, quick and dirty End Feed Wire antenna's, head down to your local Electrical Supply House and get a 500" Spool of #14 or #16 Stranded Wire for $5.00US, and have yourself a good time stringing it up in the trees. In a pinch, that'll work. However... the longer the wire, the more mass & weight. The softer and/or smaller the wire and the longer the length/weight, the more stretch. For the best long-term installation, either hard-drawn copper or copper-covered steel is a much better choice. I learned that lesson with my first 40m half-wavelength dipole. I used #14 soft-drawn copper... it gradually tuned itself lower in frequency, and then broke! Many people like to buy wire antenna stuff from The Wireman (http://www.wireman.com/). I found the product line and pricing to be better at Davis RF (http://www.davisrf.com/). 73, Bryan WA7PRC PS: CU during FD as W7MRG (2A WWA) |
#6
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![]() Bryan wrote: You wrote: The Shadow wrote: Thanks very much I shall pass it along Any advice as to wire guage? I have used lamp cord in the past. Lamont for simple, quick and dirty End Feed Wire antenna's, head down to your local Electrical Supply House and get a 500" Spool of #14 or #16 Stranded Wire for $5.00US, and have yourself a good time stringing it up in the trees. In a pinch, that'll work. However... the longer the wire, the more mass & weight. The softer and/or smaller the wire and the longer the length/weight, the more stretch. For the best long-term installation, either hard-drawn copper or copper-covered steel is a much better choice. I learned that lesson with my first 40m half-wavelength dipole. I used #14 soft-drawn copper... it gradually tuned itself lower in frequency, and then broke! Many people like to buy wire antenna stuff from The Wireman (http://www.wireman.com/). I found the product line and pricing to be better at Davis RF (http://www.davisrf.com/). 73, Bryan WA7PRC PS: CU during FD as W7MRG (2A WWA) Oops... the URL for The Wireman would be http://thewireman.com/ |
#7
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Thanks very much to all that replied. I have passed it along to our Canadian
friend Lamont "Bryan" wrote in message ... You wrote: The Shadow wrote: Thanks very much I shall pass it along Any advice as to wire guage? I have used lamp cord in the past. Lamont for simple, quick and dirty End Feed Wire antenna's, head down to your local Electrical Supply House and get a 500" Spool of #14 or #16 Stranded Wire for $5.00US, and have yourself a good time stringing it up in the trees. In a pinch, that'll work. However... the longer the wire, the more mass & weight. The softer and/or smaller the wire and the longer the length/weight, the more stretch. For the best long-term installation, either hard-drawn copper or copper-covered steel is a much better choice. I learned that lesson with my first 40m half-wavelength dipole. I used #14 soft-drawn copper... it gradually tuned itself lower in frequency, and then broke! Many people like to buy wire antenna stuff from The Wireman (http://www.wireman.com/). I found the product line and pricing to be better at Davis RF (http://www.davisrf.com/). 73, Bryan WA7PRC PS: CU during FD as W7MRG (2A WWA) |
#8
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The Shadow wrote:
... "What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In the past, I was able to purchase large coils of aluminum wire; I think it was used for either clothes line (and had a plastic covering on it), or the aluminum fencing wire. I don't remember the gauge, or if they even gave the gauge, but it seemed to be #8 or #10. It was cheap and light, worked well with the proper soldering techniques. Or, properly protected clamp connectors. Since, I have looked for this wire and not been able to find it in lowes or home depot, orchard supply, etc. Anyone know a source? JS |
#9
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John Smith I wrote:
The Shadow wrote: ... "What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In the past, I was able to purchase large coils of aluminum wire; I think it was used for either clothes line (and had a plastic covering on it), or the aluminum fencing wire. I don't remember the gauge, or if they even gave the gauge, but it seemed to be #8 or #10. It was cheap and light, worked well with the proper soldering techniques. Or, properly protected clamp connectors. Since, I have looked for this wire and not been able to find it in lowes or home depot, orchard supply, etc. Anyone know a source? JS Many years ago I bought aluminum Electric Fence Wire at Sears. Since they were acquired by K-Mart, I'd suggest looking at a Farm Supply or Coop for it. It was a bit brittle, and I was burying it for my ground planes. Jerry, W9NPI |
#10
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I have bought aluminum electric fence wire (available at Lowes, Home
Depot, etc.) to play with. It wasn't but about $3 for 500-1000 feet. Small, light and a little kinky if you aren't careful. Buck On Tue, 05 Jun 2007 21:23:00 -0700, John Smith I wrote: The Shadow wrote: ... "What gauge of insulated wire do I need to build a long wire for 20, 40, 80 meters. In the past, I was able to purchase large coils of aluminum wire; I think it was used for either clothes line (and had a plastic covering on it), or the aluminum fencing wire. I don't remember the gauge, or if they even gave the gauge, but it seemed to be #8 or #10. It was cheap and light, worked well with the proper soldering techniques. Or, properly protected clamp connectors. Since, I have looked for this wire and not been able to find it in lowes or home depot, orchard supply, etc. Anyone know a source? JS -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
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