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#1
May 18th 05, 07:17 PM
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Biggest antenna ever constructed
?
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#2
May 18th 05, 07:55 PM
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Chris wrote:
? Ariceibo? -- 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 =--- |
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#3
May 18th 05, 08:30 PM
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"Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! -- Woody harrogate2 at ntlworld dot com |
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#4
May 18th 05, 08:40 PM
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In article ,
harrogate2 wrote: Ariceibo? As a single antenna, probably. But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! Even bigger-effective-aperture telescope systems use very-long- baseline interferometry to combine the signals from multiple receivers spread out all across the planet, and even on satellites. There are some VLBI systems using satellites in earth orbit, and I believe that there are plans (or even systems in existence) which use satellites in solar orbit. The angular resolution you can get from these systems is sorta scary. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
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#5
May 18th 05, 10:40 PM
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"harrogate2" wrote in message ... "Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. Arecibo remains the largest fixed antenna. The largest steerable is DSN... 70 m ham : probably the low band beam used by JARL ? 73 Thierry http://www.astrosurf.org/lombry But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! -- Woody harrogate2 at ntlworld dot com |
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#6
May 19th 05, 03:14 AM
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The ELF antennas in Michigan and Wisconsin were bigger than 70M. Each
was 13 miles long. Wisconsin had 2 antennas and the Michigan site had 3 antennas. The patterns were steerable electronically by changing the current phases. Simple stuff. I used to work there. Scott Thierry wrote: "harrogate2" wrote in message ... "Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. Arecibo remains the largest fixed antenna. The largest steerable is DSN... 70 m ham : probably the low band beam used by JARL ? 73 Thierry http://www.astrosurf.org/lombry But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! -- Woody harrogate2 at ntlworld dot com |
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#7
May 19th 05, 09:52 PM
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"Scott" wrote in message ... The ELF antennas in Michigan and Wisconsin were bigger than 70M. Each was 13 miles long. Wisconsin had 2 antennas and the Michigan site had 3 antennas. The patterns were steerable electronically by changing the current phases. Simple stuff. I used to work there. For sure that any ELF system, due to the wavelengths used will be always very loo-ong and the longest system. In this context we can also speak about HFGW and space VLBI. But speaking in term of HF and microwaves, Arecibo and DSN remains the largest. All depend on what frequency bands are concerned. Thierry, ON4SKY Scott Thierry wrote: "harrogate2" wrote in message ... "Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. Arecibo remains the largest fixed antenna. The largest steerable is DSN... 70 m ham : probably the low band beam used by JARL ? 73 Thierry http://www.astrosurf.org/lombry But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! -- Woody harrogate2 at ntlworld dot com |
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#8
May 21st 05, 07:47 PM
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Thierry - wrote:
"harrogate2" wrote in message ... "Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. Arecibo remains the largest fixed antenna. The largest steerable is DSN... 70 m Jodrell Bank is 250 foot or 76.2m. -- Peter |
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#10
May 20th 05, 07:48 PM
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On Wed, 18 May 2005 19:30:50 GMT, "harrogate2"
wrote: "Cecil Moore" wrote in message ... Chris wrote: ? Ariceibo? -- 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 =--- As a single antenna, probably. But as an 'effective' antenna what about that line of dishes on tracks near Cambridge that ISTR is equivalent to a dish 3 miles across! Bigger maybe? -- http://www.aoc.nrao.edu/ |
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