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Topband: Minimum distance of noise generator

To: "dick-bingham" <dick-bingham@hughes.net>, <topband@contesting.com>
Subject: Topband: Minimum distance of noise generator
From: "Ulrich Weiss" <dj2ya@t-online.de>
Date: Fri, 22 Aug 2008 10:48:04 +0200
List-post: <topband@contesting.com">mailto:topband@contesting.com>
hello topbanders,

Dick, W7WKR wrote:

> I would suggest building a simple wideband noise source good for any
> reasonable band of interest. Examine the wideband noise circuit used by
> noise-bridge impedance measuring devices (one in HR back in the 80's comes
> to mind) for generating a wideband noise source. Amplify this noise and
> apply it to your source antenna.

what is the minimum distance (in wavelengths) for reliable (far field) 
results???

greetings from Germany

Uli, DJ2YA

 *******************************
     Ulrich Weiss
Am Birkenstrauch 15
D-57334 Bad Laasphe
   +49-2752-6462


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