Re: [Elecraft] Arecibo antenna collapses

Sounds like a Pink Floyd song... Frank W2YK On 12/3/2020 9:02 AM, Dick Dickinson wrote: There is also 'talk of' an ~kilometer diameter dish in a crater on the far side of the moon. That seems like a lot more fun than going rock hunting. Kind regards, Dick - KA5KKT Frank,

Re: [Elecraft] Arecibo antenna collapses

There is also 'talk of' an ~kilometer diameter dish in a crater on the far side of the moon. That seems like a lot more fun than going rock hunting. Kind regards, Dick - KA5KKT Frank, I was the foundation project engineer for the Square Kilometer Array (which your URL refers

Re: [Elecraft] Arecibo antenna collapses

on the enlightened being able to spread the good word! 73, Peter (VK6HP). -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Frank Stein Sent: Thursday, 3 December 2020 10:20 AM To: Wes Cc: Subject: Re: [Elecraft] Arecibo antenna collapses There is also

Re: [Elecraft] Arecibo antenna collapses

There is also the Square kilometer array radio telescope: https://www.skatelescope.org/ It could be ready to operate before the decade is out and is even bigger. - frank W4TG On Wed, Dec 2, 2020 at 7:03 PM Wes wrote: > Did they show you the transmitter? > > Wes N7WS > > > On 12/2/2020 10:22

Re: [Elecraft] Arecibo antenna collapses

Did they show you the transmitter? Wes  N7WS On 12/2/2020 10:22 AM, Andrew Faber via Elecraft wrote: This is certainly getting way off topic on the Elecraft reflector, but I can’t resist mentioning that I have visited the FAST telescope in Guizhou Province. Here is a brief explanation from

Re: [Elecraft] Arecibo antenna collapses

Arecibo was steerable by moving the feed point. They compensated for spherical aberration by using a travelling wave antenna for the feed, and later by using a series of sub-reflectors, the latter in the gondola. The spherical aberration is independent of pointing direction, which, I

Re: [Elecraft] Arecibo antenna collapses

Indeed they do: https://www.nature.com/articles/d41586-019-02790-3 73, Bill-AK5X > On Dec 2, 2020, at 11:56 AM, Fred Jensen wrote: > > "A billion here, a billion there ... pretty soon you're talking about real > money." > > Everett M.

Re: [Elecraft] Arecibo antenna collapses

"A billion here, a billion there ... pretty soon you're talking about real money." Everett M. Dirksen [SK] Senator I believe there's a larger [and newer] one in China.  Andy's [AE6Y] wife is an astronomer and astrophysicist and I she mentioned it in a really cool presentation to the Northern

Re: [Elecraft] Arecibo antenna collapses

On 12/2/2020 9:06 AM, j...@kk9a.com wrote: I concur, it is sad that Arecibo will not be rebuilt. The director of operations is WP3R.  I worked him in the Sweepstakes contest a couple of weeks ago. Yes, I met Sr. Vazquez WP3R when I visited Arecibo during a bicycle tour 5 years ago.  A really

Re: [Elecraft] Arecibo antenna collapses

impressive mechanical construct. 73, andy ae6y Sent from Mail for Windows 10 From: AB2E Darrell Sent: Wednesday, December 2, 2020 8:54 AM To: Elecraft Refl Subject: Re: [Elecraft] Arecibo antenna collapses I __ Elecraft mailing list Home

Re: [Elecraft] Arecibo antenna collapses

has superior sensitivity to detect cosmic phenomena, including fast radio bursts and pulsars. www.nature.com From: elecraft-boun...@mailman.qth.net on behalf of Grant Youngman Sent: Wednesday, December 2, 2020 11:47 AM To: Elecraft Refl Subject: Re: [Elecr

Re: [Elecraft] Arecibo antenna collapses

I suppose the question is why not rebuild it if the capability (or an upgraded capability) remains of consequential value to the scientific community and there is no existing capability that can be cobbled together elsewhere to match it. I don’t know what it would cost, but consider that one

Re: [Elecraft] Arecibo antenna collapses

I concur, it is sad that Arecibo will not be rebuilt. The director of operations is WP3R. I worked him in the Sweepstakes contest a couple of weeks ago. John KK9A Michael Walker va3mw wrote: Sorry, not funny. Arecibo was a great site and there are a number of Hams that are part of the