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#1
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I have a 60ft garden and my maximum height I can go is only 20ft. I would
like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? Many thanks |
#2
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On Sat, 19 Apr 2008 12:00:42 +0100, "Barrett"
wrote: I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? Many thanks I am going to give it a WAG and suggest you would be better off without the traps. Can the tuner be mounted in the weather? If so, put it as close to the wire as you can and as high as possible. If not, does if feed twin-lead? If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. My thoughts are that you will be better off with as much of your 150 feet of wire horizontal in the air rather than in the inverted L configuration, given your stated restrictions. BTW, my tuner is manual, but I operated from a 130 foot dipole about 100 feet high fed with RS tv twin-lead for about a year with 100 watts and did very well. 73 for now Buck N4PGW -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#3
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![]() "Buck" wrote in message ... On Sat, 19 Apr 2008 12:00:42 +0100, "Barrett" wrote: I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? Many thanks I am going to give it a WAG and suggest you would be better off without the traps. Can the tuner be mounted in the weather? Yes If so, put it as close to the wire as you can and as high as possible. If not, does if feed twin-lead? Yes, so far as I know. If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. This is out due to getting it through the house wall. The garden is only 60ft long, so fitting in 150ft won't work here. I could make a Z up but the end of one end would have to drop to garage roof height (9ft) and it would put the other end of the Z running (clipped onto the plastic gutter). This would put the Aerial very close to the house and very close to the neighbours TV and radio aerial. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. I could do but my nax height would be 20ft would this work? Also I have a 20ft scaffold pole note grounded that the G5RV is supported by won't this interfere with it? My thoughts are that you will be better off with as much of your 150 feet of wire horizontal in the air rather than in the inverted L configuration, given your stated restrictions. BTW, my tuner is manual, but I operated from a 130 foot dipole about 100 feet high fed with RS tv twin-lead for about a year with 100 watts and did very well. 73 for now Buck N4PGW -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#4
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Ok, Barrett,
First of all, I missed your british accent the first time around, and I have also read the instruction manual that came with the tuner. Now that I understand you and the tuner (coupler) better, I can make better informed recommendations. I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. Your coupler says it only needs 23 feet to tune 160m. At that rate, you would not be one of the big fishes in the pond, but you would be there. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. You might have more of a ground than you think. hang in there... I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? The best choice is the one that will give you effective communications given your resources and abilities. I think you will do well. I am going to give it a WAG and suggest you would be better off without the traps. your coupler supersedes your need for traps. Can the tuner be mounted in the weather? Yes See Page 7 in the users manual. Can you acquire or spare a plastic garbage can? SNIP If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. This is out due to getting it through the house wall. I assume you can get a piece of coax out from the radio to the coupler? The garden is only 60ft long, so fitting in 150ft won't work here. I could make a Z up but the end of one end would have to drop to garage roof height (9ft) and it would put the other end of the Z running (clipped onto the plastic gutter). This would put the Aerial very close to the house and very close to the neighbours TV and radio aerial. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. I could do but my nax height would be 20ft would this work? Also I have a 20ft scaffold pole note grounded that the G5RV is supported by won't this interfere with it? ![]() ![]() ![]() To me, this is your ace in the hole ![]() See the diagram at the top of page 7? Here is what I would do assuming the trees or other supports cooperate. Get a protective cover for the coupler as shown. Mount the coupler as high up the pole as you can. Ground the coupler to the pole well where you mount it, and cover the coupler as in the diagram. at the base of the pole, set one of the ground rods and ground the pole to the rod. You don't need any wire going from the tuner to the ground rod as the scaffold pole will be the conductor. From the tuner, stretch your wire out as far as you can to the other supports. Weave it around, if you must, but try to get as close to 80 feet of wire strung out as possible. Make a "T" in the wire if necessary giving the wire three points, one at the tuner and two going different directions. For me, the more wire, the better. The more spread out, the better. Now, when you reach your limit, take the rest of the wire and make as much of ground radials as you can as you see in the diagram on pages 7 & 16. If you can't run them far, go as far as you can. The second alternative? Replace your G5RV with the installation shown in the diagram on page 17. If you can't raise the coupler up the pole very high, you could mount it as high as possible on the pole, and run the hot lead up beside the pole (separated as far as possible) loop it thru an insulator near the top of the pole and continue trying to get as much wire out as possible. I imagine that if I walked thru your garden and saw it in person, I would make different suggestions, but based on my perception of what I have never seen, I can only take a bit of a guess. Let me know how it goes. Thanks -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#5
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Buck, here are some photo's of the antenna at the moment. The new one will
have to be in a similar position. http://www.hobby.pwp.blueyonder.co.uk/antenna/3.jpg http://www.hobby.pwp.blueyonder.co.uk/antenna/4.jpg Not sure what to cover the SGC with to keep the rain out. Plus it will be in direct sun all day on top of the pole. Garden is Roughly North to south.. South being at the pole end of the garden. I can disconnect the homebrew G5RV and move the ugly coax balun I made up to the pole and add some new coax in-between. I know its a lot of connections but it will have to do for the time being. Hope this helps. Thanks "Buck" wrote in message ... Ok, Barrett, First of all, I missed your british accent the first time around, and I have also read the instruction manual that came with the tuner. Now that I understand you and the tuner (coupler) better, I can make better informed recommendations. I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. Your coupler says it only needs 23 feet to tune 160m. At that rate, you would not be one of the big fishes in the pond, but you would be there. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. You might have more of a ground than you think. hang in there... I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? The best choice is the one that will give you effective communications given your resources and abilities. I think you will do well. I am going to give it a WAG and suggest you would be better off without the traps. your coupler supersedes your need for traps. Can the tuner be mounted in the weather? Yes See Page 7 in the users manual. Can you acquire or spare a plastic garbage can? SNIP If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. This is out due to getting it through the house wall. I assume you can get a piece of coax out from the radio to the coupler? The garden is only 60ft long, so fitting in 150ft won't work here. I could make a Z up but the end of one end would have to drop to garage roof height (9ft) and it would put the other end of the Z running (clipped onto the plastic gutter). This would put the Aerial very close to the house and very close to the neighbours TV and radio aerial. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. I could do but my nax height would be 20ft would this work? Also I have a 20ft scaffold pole note grounded that the G5RV is supported by won't this interfere with it? ![]() ![]() ![]() To me, this is your ace in the hole ![]() See the diagram at the top of page 7? Here is what I would do assuming the trees or other supports cooperate. Get a protective cover for the coupler as shown. Mount the coupler as high up the pole as you can. Ground the coupler to the pole well where you mount it, and cover the coupler as in the diagram. at the base of the pole, set one of the ground rods and ground the pole to the rod. You don't need any wire going from the tuner to the ground rod as the scaffold pole will be the conductor. From the tuner, stretch your wire out as far as you can to the other supports. Weave it around, if you must, but try to get as close to 80 feet of wire strung out as possible. Make a "T" in the wire if necessary giving the wire three points, one at the tuner and two going different directions. For me, the more wire, the better. The more spread out, the better. Now, when you reach your limit, take the rest of the wire and make as much of ground radials as you can as you see in the diagram on pages 7 & 16. If you can't run them far, go as far as you can. The second alternative? Replace your G5RV with the installation shown in the diagram on page 17. If you can't raise the coupler up the pole very high, you could mount it as high as possible on the pole, and run the hot lead up beside the pole (separated as far as possible) loop it thru an insulator near the top of the pole and continue trying to get as much wire out as possible. I imagine that if I walked thru your garden and saw it in person, I would make different suggestions, but based on my perception of what I have never seen, I can only take a bit of a guess. Let me know how it goes. Thanks -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#6
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Barrett,
ur pics spek lots, but im busy w/baby es will respond tonite or tomorrow. sri fer shorthand, baby in hand is fussy. On Sun, 20 Apr 2008 19:49:37 +0100, "Barrett" wrote: Buck, here are some photo's of the antenna at the moment. The new one will have to be in a similar position. http://www.hobby.pwp.blueyonder.co.uk/antenna/3.jpg http://www.hobby.pwp.blueyonder.co.uk/antenna/4.jpg Not sure what to cover the SGC with to keep the rain out. Plus it will be in direct sun all day on top of the pole. Garden is Roughly North to south.. South being at the pole end of the garden. I can disconnect the homebrew G5RV and move the ugly coax balun I made up to the pole and add some new coax in-between. I know its a lot of connections but it will have to do for the time being. Hope this helps. Thanks "Buck" wrote in message .. . Ok, Barrett, First of all, I missed your british accent the first time around, and I have also read the instruction manual that came with the tuner. Now that I understand you and the tuner (coupler) better, I can make better informed recommendations. I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. Your coupler says it only needs 23 feet to tune 160m. At that rate, you would not be one of the big fishes in the pond, but you would be there. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. You might have more of a ground than you think. hang in there... I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? The best choice is the one that will give you effective communications given your resources and abilities. I think you will do well. I am going to give it a WAG and suggest you would be better off without the traps. your coupler supersedes your need for traps. Can the tuner be mounted in the weather? Yes See Page 7 in the users manual. Can you acquire or spare a plastic garbage can? SNIP If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. This is out due to getting it through the house wall. I assume you can get a piece of coax out from the radio to the coupler? The garden is only 60ft long, so fitting in 150ft won't work here. I could make a Z up but the end of one end would have to drop to garage roof height (9ft) and it would put the other end of the Z running (clipped onto the plastic gutter). This would put the Aerial very close to the house and very close to the neighbours TV and radio aerial. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. I could do but my nax height would be 20ft would this work? Also I have a 20ft scaffold pole note grounded that the G5RV is supported by won't this interfere with it? ![]() ![]() ![]() To me, this is your ace in the hole ![]() See the diagram at the top of page 7? Here is what I would do assuming the trees or other supports cooperate. Get a protective cover for the coupler as shown. Mount the coupler as high up the pole as you can. Ground the coupler to the pole well where you mount it, and cover the coupler as in the diagram. at the base of the pole, set one of the ground rods and ground the pole to the rod. You don't need any wire going from the tuner to the ground rod as the scaffold pole will be the conductor. From the tuner, stretch your wire out as far as you can to the other supports. Weave it around, if you must, but try to get as close to 80 feet of wire strung out as possible. Make a "T" in the wire if necessary giving the wire three points, one at the tuner and two going different directions. For me, the more wire, the better. The more spread out, the better. Now, when you reach your limit, take the rest of the wire and make as much of ground radials as you can as you see in the diagram on pages 7 & 16. If you can't run them far, go as far as you can. The second alternative? Replace your G5RV with the installation shown in the diagram on page 17. If you can't raise the coupler up the pole very high, you could mount it as high as possible on the pole, and run the hot lead up beside the pole (separated as far as possible) loop it thru an insulator near the top of the pole and continue trying to get as much wire out as possible. I imagine that if I walked thru your garden and saw it in person, I would make different suggestions, but based on my perception of what I have never seen, I can only take a bit of a guess. Let me know how it goes. Thanks -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#7
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Barrett, Sorry for the delay,
I have been pretty busy, but I have time tonight to answer this better. A picture is worth 1000 words ![]() Based on your pictures, I am guessing you live in the apartment at one end of the g5rv and the other end is at a shed or carport. At the apartment, I would mount the antenna coupler to the wall, up high if possible, but if not, as high as possible, even if it is just above the ground. Then run a wire from the coupler to near the roof of the apartment and across to the far end of where the G5RV is. Then run a ground wire strait down to one of your ground rods. then take any excess wire and bury it in your garden under the long wire in the air. You should have fairly good communications on all bands. If for some reason one of your bands does not properly tune, then start trimming off the far end of the wire about 1-2 inches at the time. I don't think you will have that problem, but it should work if you do. Before you do, make sure all connections are good. Again, sorry for the delay. 73 for now. Buck N4PGW On Sun, 20 Apr 2008 19:49:37 +0100, "Barrett" wrote: Buck, here are some photo's of the antenna at the moment. The new one will have to be in a similar position. http://www.hobby.pwp.blueyonder.co.uk/antenna/3.jpg http://www.hobby.pwp.blueyonder.co.uk/antenna/4.jpg Not sure what to cover the SGC with to keep the rain out. Plus it will be in direct sun all day on top of the pole. Garden is Roughly North to south.. South being at the pole end of the garden. I can disconnect the homebrew G5RV and move the ugly coax balun I made up to the pole and add some new coax in-between. I know its a lot of connections but it will have to do for the time being. Hope this helps. -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#8
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Does it have to be a T shape and why?
How important is it to make all angles at least 90 degrees? I have neighbours both sides of my house. My neighbours to my right looking down to the pole is ok with the wire antenna but the neighbours to my left, I'm having problems with.I have a feeling that they do not want anything near there side and truth be know they would rather not see any of it. I'm sure they had some thing to do with the planning officer paying a visit to my house about 12 months ago, when I had a I-max 2000 antenna for 10-18Mhz up on a 10ft pole on near there side So I have to try and keep the wire to the one side of my garden if possible. Thanks "Buck" wrote in message ... Ok, Barrett, First of all, I missed your british accent the first time around, and I have also read the instruction manual that came with the tuner. Now that I understand you and the tuner (coupler) better, I can make better informed recommendations. I have a 60ft garden and my maximum height I can go is only 20ft. I would like to TX on 80-40 and on 160 if possible but I might be asking the impossible with the 160m.. Your coupler says it only needs 23 feet to tune 160m. At that rate, you would not be one of the big fishes in the pond, but you would be there. I do not have a ground system in place. I can put some earth rods in and some surface wire but I have no way of putting any wire into the soil itself. So I am a bit limited. You might have more of a ground than you think. hang in there... I have a 150ft of flexweave wire that is uv plastic coated to play with. I think I have three choices to chose from at the moment. I can use the SGC-230 with an inverted L. I can use the SGC-230 with an inverted L with homebrew traps built in. I can use an inverted L with homebrew traps built in but without the SGC-230. What would be the best choice and why? The best choice is the one that will give you effective communications given your resources and abilities. I think you will do well. I am going to give it a WAG and suggest you would be better off without the traps. your coupler supersedes your need for traps. Can the tuner be mounted in the weather? Yes See Page 7 in the users manual. Can you acquire or spare a plastic garbage can? SNIP If so, could you make a 150 foot dipole and feed it with twin-lead to the tuner? I would like that idea best. Even 300 ohm twin lead from Radio shack would be good. This is out due to getting it through the house wall. I assume you can get a piece of coax out from the radio to the coupler? The garden is only 60ft long, so fitting in 150ft won't work here. I could make a Z up but the end of one end would have to drop to garage roof height (9ft) and it would put the other end of the Z running (clipped onto the plastic gutter). This would put the Aerial very close to the house and very close to the neighbours TV and radio aerial. The inverted L seems to prefer ground radials, but a dipole or random wire may be better. If you can go up and only in one direction, could you run 300 ohm up and tap one end? this would be an end-fed Zep, i believe, and the tuner should tune it. I could do but my nax height would be 20ft would this work? Also I have a 20ft scaffold pole note grounded that the G5RV is supported by won't this interfere with it? ![]() ![]() ![]() To me, this is your ace in the hole ![]() See the diagram at the top of page 7? Here is what I would do assuming the trees or other supports cooperate. Get a protective cover for the coupler as shown. Mount the coupler as high up the pole as you can. Ground the coupler to the pole well where you mount it, and cover the coupler as in the diagram. at the base of the pole, set one of the ground rods and ground the pole to the rod. You don't need any wire going from the tuner to the ground rod as the scaffold pole will be the conductor. From the tuner, stretch your wire out as far as you can to the other supports. Weave it around, if you must, but try to get as close to 80 feet of wire strung out as possible. Make a "T" in the wire if necessary giving the wire three points, one at the tuner and two going different directions. For me, the more wire, the better. The more spread out, the better. Now, when you reach your limit, take the rest of the wire and make as much of ground radials as you can as you see in the diagram on pages 7 & 16. If you can't run them far, go as far as you can. The second alternative? Replace your G5RV with the installation shown in the diagram on page 17. If you can't raise the coupler up the pole very high, you could mount it as high as possible on the pole, and run the hot lead up beside the pole (separated as far as possible) loop it thru an insulator near the top of the pole and continue trying to get as much wire out as possible. I imagine that if I walked thru your garden and saw it in person, I would make different suggestions, but based on my perception of what I have never seen, I can only take a bit of a guess. Let me know how it goes. Thanks -- 73 for now Buck, N4PGW www.lumpuckeroo.com "Small - broadband - efficient: pick any two." |
#9
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Barrett,
A little speculating. Is there any chance of finding an 'anchor' point on your home's roof? Nothing very spectacular or noticeable from the 'street' side, but one that would add a few feet/yards to your present antenna supports? How would your neighbors feel about a fairly tall pole supporting a bird house? (And naturally, you would want to guy that pole to keep the bird house from falling, right?) Several possibilities there! The conductor used for an antenna must be conductive with a low resistive value. After that, almost anything will work (just fine, in most cases). Who wouldn't want gold/silver conductors if po$$ible, but copper works well for us poorer people ![]() If whatever you end up with works, it not being one of the classical 'shapes' for an antenna isn't exactly a "biggy". Having lived in places that were not the 'ideal' antenna sites for most of my life, when confronted with a site that could hold almost any antenna, I was really at a loss as to what to do. And since the antennas I have used prior to that were never 'ideal', I ended up using one of those "less than ideal" antennas and did just fine. Did I have the 'best' signal on the band? Not exactly! But so what, it was "good enough". I think you are in about the same situation, sort of. (I also do not have a planning commission or deed restrictions to worry about, so guess I'm 'ahead' of you in that regard.) Good luck! - 'Doc (Pssst! Put that tuner on the roof, cover with something that looks like a "sun roof" thingy, support the antenna wire with a post with a weather vane on the top. If questioned, say the @#$ thing has been there for ages, those @#$ - ^%%^ neighbors don't know what they are talking about!) |
#10
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Barrett wrote:
Does it have to be a T shape and why?... It "has to be" a piece of metal in the air. That's about the only constraint. And seeing as there are underground antennas, that constraint is not always constant. Put metal in the air. Tune it up. Work the world. I'm on 20 and 40 meters on 5 watts on a ~75' dipole through a tuner every day. I make contacts with Austraila, S America, Euro, Hawaii, all from my little remote QRP SSB station in Arizona. My dipole isn't tuned. It's simply two halves of a 150' piece of wire I had. I've done the same thing on a 35' wire, a ham stick vert and a pair of hamsticks horizontal. I've loaded up an aluminum lawn chair and worked Canada and the USA midwest, Florida, New England. The difference in any of the signals received is perhaps a couple of dB. Craig 'Lumpy' Lemke www.n0eq.com |
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