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#1
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![]() Some years back I buried a 30 metre (60-feet) auminium wire one spade depth in my back garden. Wire was 1.5 mm in diameter. Soil resistivity about 100 ohm-metres. To scientists that's 10 milli-Siemens. The near end of the wire came up in the shack. That's under my kitchen sink. It's still there. Open-circuit at the far end. As a counterpoise, something essential to tune it against, I erected a wire in the form of an inverted-L. This was about 30 feet high and overall length about 140 feet. I chose this length because it fitted nicely into my back garden. The front garden is too short even for an underground antenna. On the 160m band I fed into it about 30 watts from a home-brew transceiver so I can't provide for the record a manufacturer's type and serial number. However I still have the transceiver which can be inspected. Despite a high local noise level of S-6 I was able to communicate up to 60 miles with mobile stations in broad daylight on SSB. After sunset I could easily communicate with most of Europe on CW. I think a record of these buried antenna experiments should be kept for posterity, alongside the famous biblical work of B,L & E. By the way, as you see, I did remember to measure soil resistivity. It was the first thing I did. What buried wire do you think I used to measure it? ---- Reg, G4FGQ |
#2
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![]() Reg Edwards wrote: Some years back I buried a 30 metre (60-feet) auminium wire one spade depth in my back garden. Wire was 1.5 mm in diameter. Soil resistivity about 100 ohm-metres. To scientists that's 10 milli-Siemens. The near end of the wire came up in the shack. That's under my kitchen sink. It's still there. Open-circuit at the far end. As a counterpoise, something essential to tune it against, I erected a wire in the form of an inverted-L. This was about 30 feet high and overall length about 140 feet. I chose this length because it fitted nicely into my back garden. The front garden is too short even for an underground antenna. On the 160m band I fed into it about 30 watts from a home-brew transceiver so I can't provide for the record a manufacturer's type and serial number. However I still have the transceiver which can be inspected. Despite a high local noise level of S-6 I was able to communicate up to 60 miles with mobile stations in broad daylight on SSB. After sunset I could easily communicate with most of Europe on CW. I think a record of these buried antenna experiments should be kept for posterity, alongside the famous biblical work of B,L & E. By the way, as you see, I did remember to measure soil resistivity. It was the first thing I did. What buried wire do you think I used to measure it? ---- Reg, G4FGQ Hi Reg, Interesting, but isn't a 30 metre wire more like 100 feet instead of 60 feet? According to the conversions on your programs it is. Did you ever try burying your counterpoise and elevating the buried aluminum wire to see how the results compare? Gary N4AST |
#3
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"Reg Edwards"
Some years back I buried a 30 metre (60-feet) auminium wire one spade depth in my back garden. As a counterpoise, something essential to tune it against, I erected a wire in the form of an inverted-L. This was about 30 feet high and overall length about 140 feet. I think a record of these buried antenna experiments should be kept for posterity, alongside the famous biblical work of B,L & E. ____________ So you loaded your tx into an antenna system consisting of a 140 foot inverted L, 30 feet above ground with a buried ground radial 99 feet long. What is so unusual about that? Certainly not a venture of biblical proportions, IMO. Perhaps you haven't flipped enough of your calendar pages? RF |
#4
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![]() jgboyles wrote Hi Reg, Interesting, but isn't a 30 metre wire more like 100 feet instead of 60 feet? According to the conversions on your programs it is. ============================= It's in the right ball park. I'm pleased you make use of the measurements conversions in some of my programs. Its just a small thing I can do to help paying back for what you Americans did by helping us poor Brits to win the war. ;o) ;o) ;o) ;o) ;o) ;o) ---- Reg. |
#5
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Reg:
Indeed, my grandfather fought with "you brits" during the war, he had many german lugars, swords, coins and memorabilia he brought back... He seen enough to hold a high respect for the british empires' citizens--for the rest of his life... indeed, his words inspired such in others... Unless he greatly exaggerated the acts of glory, valor, bravery and loyalty demonstrated by the british troops, (which I never found existed in my grandfather--exaggeration), which he shared foxholes with, you brits have nothing to repay... we are even--perhaps we even got the better of the deal, as our forefathers had the company of decent men to share those bad times with... he was there and liberated the Nazi camps, in the end... he would cry when he would describe what his eyes could never forget... .... he spoke highly of the aussies also, indeed, he commented, "some of those men were above mere human beings" (his EXACT words), when referring to both brits and aussies. I have told my son of this man (his great-grandfather) and the men he (my grandfather) was fortunate enough to have had at his side... If the future demands, let us hope we shall be such allies again... John "Reg Edwards" wrote in message ... jgboyles wrote Hi Reg, Interesting, but isn't a 30 metre wire more like 100 feet instead of 60 feet? According to the conversions on your programs it is. ============================= It's in the right ball park. I'm pleased you make use of the measurements conversions in some of my programs. Its just a small thing I can do to help paying back for what you Americans did by helping us poor Brits to win the war. ;o) ;o) ;o) ;o) ;o) ;o) ---- Reg. |
#6
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Reg Edwards wrote:
I'm pleased you make use of the measurements conversions in some of my programs. Its just a small thing I can do to help paying back for what you Americans did by helping us poor Brits to win the war. ;o) ;o) ;o) ;o) ;o) ;o) Hey Reg, guess where our English system of measurements came from. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
#7
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On Thu, 28 Jul 2005 22:13:24 -0500, Cecil Moore
wrote: Hey Reg, guess where our English system of measurements came from. The Romans, the same as ours Rex. T |
#9
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Some of the lads here buried a wire (no counterpoise) in the
sand in the desert and successfully transmitted some thousands of miles to the disbelief of the receiving stations. No measurements of any scientific stuff like soil conductivity, but. :-) Cheers Murray vk4aok Reg Edwards wrote: Some years back I buried a 30 metre (60-feet) auminium wire one spade depth in my back garden. Wire was 1.5 mm in diameter. Soil resistivity about 100 ohm-metres. To scientists that's 10 milli-Siemens. The near end of the wire came up in the shack. That's under my kitchen sink. It's still there. Open-circuit at the far end. As a counterpoise, something essential to tune it against, I erected a wire in the form of an inverted-L. This was about 30 feet high and overall length about 140 feet. I chose this length because it fitted nicely into my back garden. The front garden is too short even for an underground antenna. On the 160m band I fed into it about 30 watts from a home-brew transceiver so I can't provide for the record a manufacturer's type and serial number. However I still have the transceiver which can be inspected. Despite a high local noise level of S-6 I was able to communicate up to 60 miles with mobile stations in broad daylight on SSB. After sunset I could easily communicate with most of Europe on CW. I think a record of these buried antenna experiments should be kept for posterity, alongside the famous biblical work of B,L & E. By the way, as you see, I did remember to measure soil resistivity. It was the first thing I did. What buried wire do you think I used to measure it? ---- Reg, G4FGQ |
#10
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![]() Reg Edwards wrote: Some years back I buried a 30 metre (60-feet) auminium wire one spade depth in my back garden. Wire was 1.5 mm in diameter. Soil resistivity about 100 ohm-metres. To scientists that's 10 milli-Siemens. The near end of the wire came up in the shack. That's under my kitchen sink. It's still there. Open-circuit at the far end. Reg, was that 30 meters and 90 feet or 60 feet and 20 meters? Just for us mathematically challenged. W4ZCB |
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