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#121
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The earth
Szczepan Bialek wrote:
It is not true. You know that. Marconi was wrong. Most of the antennas in use today were not invented until after Marconi. Marconi would be totally baffled if he were shown a helical, yagi or slot antenna. |
#122
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The earth
Szczepan Bialek wrote:
"NM5K" napisal w wiadomosci ... Fer instance, I'm sitting out in the woods up at my recreational living center.. I have dipoles strung up in the trees which I leave there, and I roll the rg-58 coax up and hang it on a tree branch when I leave. Not a ground wire, or ground connection in sight.. And works perfectly well. Of course, you can't really see the wires here, but "S" can trust me, there is no ground connection. The radio is sitting on that stone bench, and the only connections are 12v to my car battery, Where is the car battery? On the stone bench or in the car? S* It makes no difference. |
#123
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The earth
Ian wrote:
I feel it is awkward to say that Marconi was wrong even though we now know this is the case. Personally, I'd say that Marconi's opinion that "no practical system of wireless telegraphy exists where the instruments are not connected to earth" obviously related to his own use of wireless. As I understand it, Marconi's aerials were not resonant at the frequency he was using. They would therefore be a mis-match to his radios and this situation was alleviated by using connections to earth. Little of the technology in use today was known in Marconi's time. Marconi knew nothing of resonance, impedance, or electromagnetic field theory; it all came after his time. Marconi would have been totally baffled if shown a helical, slot, yagi, or any number of antennas invented after his time in common use today. The only reference antenna Marconi had was a wire of some sort fed against ground. For that particular type of antenna, Marconi was correct, but his statement is NOT correct for antennas in general. |
#124
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The earth
wrote in message
... Ian wrote: Little of the technology in use today was known in Marconi's time. Marconi knew nothing of resonance, impedance, or electromagnetic field theory; it all came after his time. Marconi would have been totally baffled if shown a helical, slot, yagi, or any number of antennas invented after his time in common use today. The only reference antenna Marconi had was a wire of some sort fed against ground. For that particular type of antenna, Marconi was correct, but his statement is NOT correct for antennas in general. Hello again. I bet that Marconi would have been very wiling to learn about new theory and technology ... unlike some people. Regards, Ian. |
#125
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The earth
Ian wrote:
wrote in message ... Ian wrote: Little of the technology in use today was known in Marconi's time. Marconi knew nothing of resonance, impedance, or electromagnetic field theory; it all came after his time. Marconi would have been totally baffled if shown a helical, slot, yagi, or any number of antennas invented after his time in common use today. The only reference antenna Marconi had was a wire of some sort fed against ground. For that particular type of antenna, Marconi was correct, but his statement is NOT correct for antennas in general. Hello again. I bet that Marconi would have been very wiling to learn about new theory and technology ... unlike some people. Regards, Ian. I would also bet Marconi would not stubornly cling to something said a 100 years before his time as being absolutely correct. |
#126
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The earth
wrote in message ... Ian wrote: wrote in message ... Ian wrote: Little of the technology in use today was known in Marconi's time. Marconi knew nothing of resonance, impedance, or electromagnetic field theory; it all came after his time. Marconi would have been totally baffled if shown a helical, slot, yagi, or any number of antennas invented after his time in common use today. The only reference antenna Marconi had was a wire of some sort fed against ground. For that particular type of antenna, Marconi was correct, but his statement is NOT correct for antennas in general. Hello again. I bet that Marconi would have been very wiling to learn about new theory and technology ... unlike some people. Regards, Ian. # I would also bet Marconi would not stubornly cling to something said a 100 # years before his time as being absolutely correct. IMHO the guy is just jerking your chain by deliberately being dense. The questions are nonsensical and remind me of that old "Eliza" software that would take your words and run you around in endless circles. |
#127
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The earth
On 4/17/2012 3:01 AM, Szczepan Bialek wrote:
napisal w wiadomosci ... Fer instance, I'm sitting out in the woods up at my recreational living center.. I have dipoles strung up in the trees which I leave there, and I roll the rg-58 coax up and hang it on a tree branch when I leave. Not a ground wire, or ground connection in sight.. And works perfectly well. Of course, you can't really see the wires here, but "S" can trust me, there is no ground connection. The radio is sitting on that stone bench, and the only connections are 12v to my car battery, Where is the car battery? On the stone bench or in the car? S* It doesn't matter. 12v is 12v.. But to answer your question, I open the hood of the car, and attach the wires to the battery while it's in the car. That way I can start the car to charge the battery every once in a while. But the power source of the radio has nothing whatsoever to do with the antenna. I could place the battery anywhere and the operation would be the same. The car is not part of the antenna. The *complete* antenna is suspended between a couple of oak trees well over my head. The antenna is decoupled from the feed line. And there are no connections to ground. One could consider the negative power lead as connecting to a "chassis", IE: the body of the car, but that is a DC connection, not RF. Moving the battery would make no difference whatsoever in the performance of the antenna. |
#128
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The earth
"Wayne" wrote in message
... wrote in message ... IMHO the guy is just jerking your chain by deliberately being dense. The questions are nonsensical and remind me of that old "Eliza" software that would take your words and run you around in endless circles. Hello Wayne. Your humble opinion is correct. The argument has indeed gone in circles. Sometimes I wonder if he's using a translation engine to handle English. Regards, Ian. |
#129
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The earth
wrote in message
... Hello again. I bet that Marconi would have been very wiling to learn about new theory and technology ... unlike some people. Regards, Ian. I would also bet Marconi would not stubornly cling to something said a 100 years before his time as being absolutely correct. Hello again. I agree. I'm sure that Marconi was bright enough to investigate new ideas. I was at a social event with his widow and daughter a long time ago but there wasn't time to ask her about him. Regards, Ian. |
#130
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The earth
On 4/17/2012 10:47 AM, Szczepan Bialek wrote:
napisal w wiadomosci ... Szczepan wrote: At transmitting you have the deficit and at receiving the excess. Without the earth the static build up and radio stop working. How would you know that when you don't even have a transmitter? But my "friend" Marconi had a lot. He wrote: "but in my opinion no practical system of wireless telegraphy exists where the instruments are not connected to earth." You will transmit just fine if you have the ground/chassis/counterpoise. S* And without it, fine as well. It is not true. You know that. S* I guess all the people I talk to using that portable rig are just a figment of my imagination? And likewise here at the house where most of my systems are ungrounded.. It's actually quite astounding.. I've worked about 29 zillion people using various ungrounded antenna systems that don't work. How did I pull off such a feat? Did I scream real loud? Did I hire R. Lee Ermey to scream for me? He's pretty good at it.. Maybe I built a big fire behind the radio, and sent smoke signals.. I suppose that could be a viable explanation, being as that land was Indian Territory until a couple of years before Marconi made that statement. :\ I don't own any war drums, so we would have to rule those out.. :| Maybe I pass notes around the country on the backs of tarantulas.. They usually don't mind as long as I don't use a hat pin to attach the notes to their backs. http://home.comcast.net/~disk100/oct17-4.jpg |
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