[TowerTalk] RE : Grading a ground radial system

[hermans]

Depends upon you need a new grass mower or a good radiating HF  array
...........

Jos on4kj

-----Message d'origine-----
De : towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] De la part de
Dinsterdog at aol.com
Envoyé : samedi 14 mai 2005 16:04
À : towertalk at 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.

_______________________________________________
TowerTalk mailing list
TowerTalk at contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk