archive: SETI Re: Little Ear

SETI Re: Little Ear

Dr. H. Paul Shuch ( (no email) )
Sun, 30 Aug 1998 10:20:29 -0400

At 19:22 08/29/1998 EDT, wrote:

>Hello Again,
>I've seen some technical specs on the Big Ear antenna, and I'm
>wondering how much gain one could get at 1420 with a reflector
>about 10x24 feet? It looks like the really hard part would be the
>design of the curved (2nd) reflector. Anyways, I wanted to ask
>the pros what they think about a reduced scale Big Ear..

It would be a great project, Rich, but a non-trivial one. The power gain
would be the ratio of the areas of the reflectors, so divide (10*24) square
feet by whatever the dimensions of the Big Ear reflector were (should be in
the literature). 10 times the log of that ratio is the reduction in gain
you would experience, *if* you fed the thing right. Only the feedhorns of
Big Ear were a pretty tricky arrangement. Would be nice if we could get
the design specs from Kraus, Dixon and company.
H. Paul Shuch, Ph.D. -- Executive Director, The SETI League, Inc.
433 Liberty Street, PO Box 555, Little Ferry NJ 07643 USA
voice (201) 641-1770; fax (201) 641-1771; URL
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