well,
I have 4th and 5th edition books, so I am a little confused, because from
4th edition book the WA3FET optimized 4 square array is the best option
ON4UN 4TH EDITION BOOK
CHAPTER/ARRAY NAME GAIN RDF
DMF
4.7.1.1 the four square array 6.67dBi 10.58dB
21.02dB
4.7.2.1 WA3FET optimized four square array 7.25dBi 11.4dB 24.4dB
7.3 the K8UR sloping-dipoles four square array 6.3dBi 11.07dB 22.7dB
ON4UN 5TH EDITION BOOK
CHAPTER/ARRAY NAME GAIN RDF
DMF
4.7.1.1 the four square array 5.75dBi 10.52dB
21.02dB
4.7.2.1 WA3FET optimized four square array 6.29dBi 11.4dB 24.4dB
7.2.1 the K8UR sloping-dipoles four square array 6.5dBi 11.07dB 22.7dB
73,
Jorge
CX6VM/CW5W
-----Mensaje original-----
De: Jorge Diez - CX6VM [mailto:cx6vm.jorge@gmail.com]
Enviado el: Viernes, 26 de Agosto de 2011 08:45 p.m.
Para: 'topband@contesting.com'
Asunto: why radials? K8UR or 4SQ array
Hello,
after your very helpful emails about soldering radials, I went to ON4UN 5th
edition book to read more about that.
And I found this number for my possible antennas. I don´t know and ON4UN
don?t tell how is a WA3FET optimized array, anyway seems the K8UR system is
the best option from the next 3 options.
CHAPTER/ARRAY NAME GAIN RDF
DMF
4.7 the four square array 5.75dBi 10.52dB
21.02dB
4.7.2 WA3FET optimized four square array 6.29dBi 11.4dB
24.4dB
7.2 the K8UR sloping-dipoles four square array 6.5dBi 11.07dB 22.7dB
Next month I am rising a 200ft tower. My idea was to do a 4 square system,
with 4 wires holding vertically down from ropes supported from top of the
tower. Because I don´t have time to be ready for next October, and don´t
have the 31.500ft of wire for the radials, I decided to do the K8UR system.
this K8UR system don´t need radials!, and have more gain than the
traditional 4 square, so my question is why I will spend $$$$$ to upgrade
from K8UR system to a 4 square if it have less gain?
Just to be sure I am doing a good reading of ON4UN book, your feedback is
well appreciated.
73,
Jorge
CX6VM/CW5W
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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