archive: Re: SETI

Re: SETI

Dr. H. Paul Shuch ( (no email) )
Thu, 13 May 1999 22:14:11 -0400

At 09:17 PM 5/13/99 -0400, Matthew G Cheung wrote:
>I was wondering, would an 800 Mhz scanner be any good for a reciever for
>an Argus station?

Although there is no inherent reason not to scan for intelligently
generated extra-terrestrial signals in the 800 MHz band, bear in mind that
to achieve gains comparable to those realized at 1420 MHz, your antenna
will have to be roughly twice the diameter. Most scanners have only
limited spectral purity and rather poor frequency stability, which will
effectively limit your sensitivity (by requiring wide DSP bins and short
integration times). Also, the prefered demodulation mode is SSB, so be
sure your scanner is not an FM-only receiver, but has a suitable product
detector.
--------------------------------
H. Paul Shuch, Ph.D., CFII, FBIS
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
n6tx@setileague.org www.setileague.org
Project Argus station FN11LH

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