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Navy Antennas (was Tilted Pinball Antenna Theory)
On Sun, 14 Sep 2008 10:33:28 -0700, Richard Clark
wrote: However, returning to my own recent shipboard experience and antennas there, I will later today post a link to a dozen or so pictures. It will include shots of Guss' Loops. I dare say several of these pictures will provoke much head scratching (but only to those few actually interested in antennas here in this forum). http://home.comcast.net/~kb7qhc/antennas/navy/ 73's Richard Clark, KB7QHC |
Navy Antennas (was Tilted Pinball Antenna Theory)
"Richard Clark" wrote in message ... On Sun, 14 Sep 2008 10:33:28 -0700, Richard Clark wrote: However, returning to my own recent shipboard experience and antennas there, I will later today post a link to a dozen or so pictures. It will include shots of Guss' Loops. I dare say several of these pictures will provoke much head scratching (but only to those few actually interested in antennas here in this forum). http://home.comcast.net/~kb7qhc/antennas/navy/ I used to have the nomenclatures of all those antennas memorized, but, alas, having gotten away from EMI inspections in 2003 and having fully retired last year, all I can call to mind is the AS-2815/SSR-1 (your "Drooped Cross Horizontal") You zeroed in on some cryppie antennas. I rocognize the biconical dipole, an HFDF antenna and a Rubicon antenna. They're often found together on an Aegis cruiser. (Makes me want to put on my coveralls and get back out there -- or maybe not.) |
Navy Antennas (was Tilted Pinball Antenna Theory)
"Sal M. Onella" wrote in message ... "Richard Clark" wrote in message ... On Sun, 14 Sep 2008 10:33:28 -0700, Richard Clark wrote: However, returning to my own recent shipboard experience and antennas there, I will later today post a link to a dozen or so pictures. It will include shots of Guss' Loops. I dare say several of these pictures will provoke much head scratching (but only to those few actually interested in antennas here in this forum). http://home.comcast.net/~kb7qhc/antennas/navy/ I used to have the nomenclatures of all those antennas memorized, but, alas, having gotten away from EMI inspections in 2003 and having fully retired last year, all I can call to mind is the AS-2815/SSR-1 (your "Drooped Cross Horizontal") You zeroed in on some cryppie antennas. I rocognize the biconical dipole, an HFDF antenna and a Rubicon antenna. They're often found together on an Aegis cruiser. (Makes me want to put on my coveralls and get back out there -- or maybe not.) Hi "Sal" I'd like to know more about the Drooped Cross Horizontal"). Do you know the frequency it is designed for? Jerry KD6JDJ |
Navy Antennas (was Tilted Pinball Antenna Theory)
On Mon, 15 Sep 2008 12:01:10 GMT, "Jerry"
wrote: "Sal M. Onella" wrote in message ... "Richard Clark" wrote in message ... On Sun, 14 Sep 2008 10:33:28 -0700, Richard Clark wrote: However, returning to my own recent shipboard experience and antennas there, I will later today post a link to a dozen or so pictures. It will include shots of Guss' Loops. I dare say several of these pictures will provoke much head scratching (but only to those few actually interested in antennas here in this forum). http://home.comcast.net/~kb7qhc/antennas/navy/ I used to have the nomenclatures of all those antennas memorized, but, alas, having gotten away from EMI inspections in 2003 and having fully retired last year, all I can call to mind is the AS-2815/SSR-1 (your "Drooped Cross Horizontal") You zeroed in on some cryppie antennas. I rocognize the biconical dipole, an HFDF antenna and a Rubicon antenna. They're often found together on an Aegis cruiser. (Makes me want to put on my coveralls and get back out there -- or maybe not.) Hi "Sal" I'd like to know more about the Drooped Cross Horizontal"). Do you know the frequency it is designed for? Jerry KD6JDJ Hi Jerry, I built a model of it, and from by guess and by golly, I presumed it would be somewhere in the middle of the VHF/UHF Shipboard Band (225-400 MHz) and made it resonant at 300 MHz (arbitrary selection, mind you). Let me know if you want a copy of that file. 73's Richard Clark, KB7QHC |
Navy Antennas (was Tilted Pinball Antenna Theory)
On Mon, 15 Sep 2008 00:35:02 -0700, "Sal M. Onella"
wrote: You zeroed in on some cryppie antennas. I rocognize the biconical dipole, an HFDF antenna and a Rubicon antenna. They're often found together on an Aegis cruiser. (Makes me want to put on my coveralls and get back out there -- or maybe not.) There were more antennas to select from for posting, but they inhabited higher frequencies and had less obvious structural elements - like one I stood next to while the crew manned the rails. Not crypto, per sé, but one of those spook traffic sniffers that was the size of an industrial washing machine, sitting on the weather deck of the forward superstructure. The CT Chief standing next to me pointed it out. The shipboard shots were either the USS Bunker Hill, or the USS Princeton, AEGIS cruisers as you have already said. 73's Richard Clark, KB7QHC |
Navy Antennas (was Tilted Pinball Antenna Theory)
On Mon, 15 Sep 2008 00:35:02 -0700, "Sal M. Onella"
wrote: all I can call to mind is the AS-2815/SSR-1 (your "Drooped Cross Horizontal") For those who want to see the specifics, use the nomenclature offered and select at page: http://www.combatindex.com/hardware/...nsor_main.html 73's Richard Clark, KB7QHC |
Navy Antennas (was Tilted Pinball Antenna Theory)
"Richard Clark" wrote in message ... On Mon, 15 Sep 2008 12:01:10 GMT, "Jerry" wrote: "Sal M. Onella" wrote in message ... "Richard Clark" wrote in message ... On Sun, 14 Sep 2008 10:33:28 -0700, Richard Clark wrote: However, returning to my own recent shipboard experience and antennas there, I will later today post a link to a dozen or so pictures. It will include shots of Guss' Loops. I dare say several of these pictures will provoke much head scratching (but only to those few actually interested in antennas here in this forum). http://home.comcast.net/~kb7qhc/antennas/navy/ I used to have the nomenclatures of all those antennas memorized, but, alas, having gotten away from EMI inspections in 2003 and having fully retired last year, all I can call to mind is the AS-2815/SSR-1 (your "Drooped Cross Horizontal") You zeroed in on some cryppie antennas. I rocognize the biconical dipole, an HFDF antenna and a Rubicon antenna. They're often found together on an Aegis cruiser. (Makes me want to put on my coveralls and get back out there -- or maybe not.) Hi "Sal" I'd like to know more about the Drooped Cross Horizontal"). Do you know the frequency it is designed for? Jerry KD6JDJ Hi Jerry, I built a model of it, and from by guess and by golly, I presumed it would be somewhere in the middle of the VHF/UHF Shipboard Band (225-400 MHz) and made it resonant at 300 MHz (arbitrary selection, mind you). Let me know if you want a copy of that file. 73's Richard Clark, KB7QHC Hi Richard Yes, I sure would like to see your EZNEC file. I'd benefit from seeing how you modeled it too. The antenna looks like it iis designed for satellite reception. It interests me to consider that the "DCA" that I developed would (perhaps) be a design concept applicable to this operational requirement. Jerry KD6JDJ |
Navy Antennas (was Tilted Pinball Antenna Theory)
Jerry wrote:
... Hi Richard Yes, I sure would like to see your EZNEC file. I'd benefit from seeing how you modeled it too. The antenna looks like it iis designed for satellite reception. It interests me to consider that the "DCA" that I developed would (perhaps) be a design concept applicable to this operational requirement. Jerry KD6JDJ Uhh, those eznec files, they are kinda like a high-school\college friend recently explained to me in financial terms: "If you have a sheet of paper claiming a "controlling interest in gold", all you REALLY have is a sheet of paper! If you are looking at the gold you are "invested" in, you REALLY HAVE the gold!" wink But then, it is only when you realize there have been more "certificates in 'controlling' interests in gold" issued than the amount of gold which exists in the world, that, you suddenly awaken to a HARSH reality! (like some have "been had!") Read about "The Great Depression", I tell 'ya, there are clues to be had there! I mean, really, it is the same old game, just new "marks!" chuckle Regards, JS |
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On Sep 15, 5:46*pm, John Smith wrote:
Jerry wrote: ... * Hi Richard * Yes, I sure would like to see your EZNEC file. * I'd benefit from seeing how you modeled it too. * The antenna looks like it iis designed for satellite reception. * It interests me to consider that the "DCA" that I developed would (perhaps) be a design concept applicable to this operational requirement. |
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"John Smith" wrote in message ... On Sep 15, 5:46 pm, John Smith wrote: Jerry wrote: ... Hi Richard Yes, I sure would like to see your EZNEC file. I'd benefit from seeing how you modeled it too. The antenna looks like it iis designed for satellite reception. It interests me to consider that the "DCA" that I developed would (perhaps) be a design concept applicable to this operational requirement. Jerry KD6JDJ Uhh, those eznec files, they are kinda like a high-school\college friend recently explained to me in financial terms: "If you have a sheet of paper claiming a "controlling interest in gold", all you REALLY have is a sheet of paper! If you are looking at the gold you are "invested" in, you REALLY HAVE the gold!" wink But then, it is only when you realize there have been more "certificates in 'controlling' interests in gold" issued than the amount of gold which exists in the world, that, you suddenly awaken to a HARSH reality! (like some have "been had!") Read about "The Great Depression", I tell 'ya, there are clues to be had there! I mean, really, it is the same old game, just new "marks!" chuckle Regards, JS Hi John You are right, this EZNEC antenna modeling program is like gold to anyone interested in learning about antennas. You are additionally right about the fact that all you need is a piece of paper (or monitor) to display aspects of an antenna that would otherwise require thousands of dollars to duplicate. Jerry KD6JDJ |
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