Re: Topband: why radials? K8UR or 4SQ array
On 08/26/2011 07:44 PM, Jorge Diez - CX6VM wrote: > 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? Don't. A 4 square array is very useful for people without 200 foot antennas, and with space for radials. If you have exceedingly poor soil and more vertical space than radial space, an array of vertical dipoles may simply make more sense for your installation. I plan to build two arrays of vertical dipoles too, suspended from my trees. These will be for 40m and 80m, with the ends of each dipole "folded over a little", double L style. This beats verticals in my qth, since I don't have quite enough space for radials and the soil is very poor. Lifting the point of maximum current off the ground is simply the better option for my yard. It sounds like the same is true for you. -- All rights reversed. ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Re: Topband: why radials? K8UR or 4SQ array
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 GAINRDF 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 GAINRDF 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.jo...@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 dont tell how is a WA3FET optimized array, anyway seems the K8UR system is the best option from the next 3 options. CHAPTER/ARRAY NAME GAINRDF DMF 4.7 the four square array 5.75dBi 10.52dB 21.02dB 4.7.2 WA3FET optimized four square array6.29dBi 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 ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
Topband: 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 dont tell how is a WA3FET optimized array, anyway seems the K8UR system is the best option from the next 3 options. CHAPTER/ARRAY NAME GAINRDF DMF 4.7 the four square array 5.75dBi 10.52dB 21.02dB 4.7.2 WA3FET optimized four square array6.29dBi 11.4dB 24.4dB 7.2 the K8UR sloping-dipoles four square array 6.5dBi 11.07dB 22.7dB6.5 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 ___ UR RST IS ... ... ..9 QSB QSB - hw? BK
