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[TowerTalk] RE : Grading a ground radial system

To: <Dinsterdog@aol.com>, <towertalk@contesting.com>
Subject: [TowerTalk] RE : Grading a ground radial system
From: "hermans" <on4kj@skynet.be>
Date: Sun, 15 May 2005 20:01:37 +0100
List-post: <mailto:towertalk@contesting.com>
Depends upon you need a new grass mower or a good radiating HF  array
...........

Jos on4kj

-----Message d'origine-----
De?: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] De la part de
Dinsterdog@aol.com
Envoyé?: samedi 14 mai 2005 16:04
À?: towertalk@contesting.com
Objet?: [TowerTalk] Grading a ground radial system

I'm trying to figure out how well my radial system is performing with
test  
down at antenna feed point:
 
Radials detached:
 
Resonant point w/ 1.6 SWR,  80 ohms impedance,  40Khz  bandwidth at 2:1
SWR 
bell curve
 
 
With Radials attached:
 
85Khz drop in resonant point now with 1.4 SWR, 42 ohm impedance,   56
Khz 
bandwidth at 2:1 SWR bell curve.
 
With radials, big drop in resonant point, impedance drops at antenna,
and  
slightly wider bandwidth at 2:1 SWR bell curve.  So how is my radial
system 
doing? 
 
73
 
Paul   N0AH 
 
 
 
 
_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.

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_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless Weather 
Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with any questions 
and ask for Sherman, W2FLA.

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