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From: dold@mitisft.Convergent.COM (Clarence Dold)
Newsgroups: sci.military
Subject: Re: "Stealth" Bombers
Message-ID: <1991Jan24.044633.26697@cbnews.att.com>
Date: 24 Jan 91 04:46:33 GMT
References: <1991Jan23.044226.7926@cbnews.att.com>
Sender: military@cbnews.att.com (William B. Thacker)
Organization: Convergent Technologies, San Jose, CA
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From: dold@mitisft.Convergent.COM (Clarence Dold)

in article <1991Jan23.044226.7926@cbnews.att.com>, gwh%soda.Berkeley.EDU@ucbvax.Berkeley.EDU (George William Herbert) says:
>From my understanding of it, it's stealthy in 2 ways: one, it's flat surfaces
> have a near-zero radar return at any frequency (except at radar wavelength
> approaching the plane's size...) unless viewed directly perpendicularly.  The

Long ago, I worked on a low frequency radar.
SR-71 would overfly our radar coverage area, and we could actually see them
quite well, although they were 'stealthy' to the higher frequency radar used
by flight line control towers.
Typically, SR-71 would 'announce' their incoming position, both by voice,
and an occasional IFF squawk.  They could often be spotted with binoculars
before they showed clearly on radar.  This was on the tower radar units,
which didn't carry the cute little ID displays that todays displays have.
On our displays, the SR-71 was clearly visible, but not for long ;-).

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