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#1
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Efficiency of Vertical
John Ferrell wrote:
I am not doubting your word but I am curious how you modeled this in EZNEC? I modeled it on 40m with radials elevated one foot above ground. Note: one foot is 0.007 WL on 40m, admittedly ballpark, but roughly half the power seems to be lost in the direction of no radials. Maybe someone with NEC-4 can provide a more accurate simulation. The good news is that losing half the power is roughly half an S-Unit. -- 73, Cecil http://www.w5dxp.com |
#2
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Efficiency of Vertical
Cecil Moore wrote:
John Ferrell wrote: I am not doubting your word but I am curious how you modeled this in EZNEC? I modeled it on 40m with radials elevated one foot above ground. Note: one foot is 0.007 WL on 40m, admittedly ballpark, but roughly half the power seems to be lost in the direction of no radials. Maybe someone with NEC-4 can provide a more accurate simulation. The good news is that losing half the power is roughly half an S-Unit. Hi Cecil, Just curious. Half the power of what? 120 radials 1 foot off ground? Input power? 73, Chuck ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#3
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Efficiency of Vertical
Chuck wrote:
Just curious. Half the power of what? Sorry for the confusion. The 3.5 dB is the front to back ratio where the front is the side with radials. -- 73, Cecil, w5dxp.com |
#4
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Efficiency of Vertical
On Fri, 18 May 2007 13:29:44 GMT, Cecil Moore
wrote: John Ferrell wrote: I am not doubting your word but I am curious how you modeled this in EZNEC? I modeled it on 40m with radials elevated one foot above ground. Note: one foot is 0.007 WL on 40m, admittedly ballpark, but roughly half the power seems to be lost in the direction of no radials. Maybe someone with NEC-4 can provide a more accurate simulation. The good news is that losing half the power is roughly half an S-Unit. Thanks! I have been using the same tactic for my modeling but I was unsure about the accuracy of the answers. John Ferrell W8CCW "Life is easier if you learn to plow around the stumps" |
#5
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Efficiency of Vertical
John Ferrell wrote:
I have been using the same tactic for my modeling but I was unsure about the accuracy of the answers. I am also unsure about the accuracy of the answers. But halitosis is better than no breath at all. :-) -- 73, Cecil http://www.w5dxp.com |
#6
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Efficiency of Vertical
On Sat, 19 May 2007 00:20:04 GMT, Cecil Moore
wrote: John Ferrell wrote: I have been using the same tactic for my modeling but I was unsure about the accuracy of the answers. I am also unsure about the accuracy of the answers. But halitosis is better than no breath at all. :-) I agree. John Ferrell W8CCW "Life is easier if you learn to plow around the stumps" |
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