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OK, let's discuss dipoles vs length
Lostgallifreyan wrote:
wrote in : Yep, and once the issue of size versus efficieny is put to rest, it would not be a bad idea to look at the real effects of ground, both in terms of height in wavelengths and soil quality. Thankyou. This is the bit I am most weak on (though I did not grasp all the previous detail, the ground loss was an issue not lost on me, and is the one I need most to solve in my next efforts). What is this NEC program, and where can I find it? Sorry, but I have to ask, or Google will likely flood me with Nippon Electric Company details. Look at this for an overview of NEC. http://en.wikipedia.org/wiki/Numeric...magnetics_Code At the bottom under External links you will find both free and commercial implementations. EZNEC by W7EL is popular among hams and has a free demo version that is fully functional but limited in how complex a model you can generate. NEC itself just crunches and produces numbers, but there are several versions, including EZNEC, which have graphical interfaces to make it easier to build the model and view the results. I've used EZNEC+ for years. -- Jim Pennino |
#3
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OK, let's discuss dipoles vs length
wrote in message ... Lostgallifreyan wrote: wrote in : Yep, and once the issue of size versus efficieny is put to rest, it would not be a bad idea to look at the real effects of ground, both in terms of height in wavelengths and soil quality. Thankyou. This is the bit I am most weak on (though I did not grasp all the previous detail, the ground loss was an issue not lost on me, and is the one I need most to solve in my next efforts). What is this NEC program, and where can I find it? Sorry, but I have to ask, or Google will likely flood me with Nippon Electric Company details. # Look at this for an overview of NEC. # http://en.wikipedia.org/wiki/Numeric...magnetics_Code # At the bottom under External links you will find both free and commercial # implementations. # EZNEC by W7EL is popular among hams and has a free demo version that is # fully functional but limited in how complex a model you can generate. # NEC itself just crunches and produces numbers, but there are several # versions, including EZNEC, which have graphical interfaces to make # it easier to build the model and view the results. # I've used EZNEC+ for years. Me too. It has been extremely useful in identifying promising approaches without having to build the hardware for each. |
#4
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OK, let's discuss dipoles vs length
In message ,
writes Look at this for an overview of NEC. http://en.wikipedia.org/wiki/Numeric...magnetics_Code At the bottom under External links you will find both free and commercial implementations. EZNEC by W7EL is popular among hams and has a free demo version that is fully functional but limited in how complex a model you can generate. NEC itself just crunches and produces numbers, but there are several versions, including EZNEC, which have graphical interfaces to make it easier to build the model and view the results. I've used EZNEC+ for years. I use 4NEC2 - it's free ! Arie Voors used to post here, but I've not seen anything from him for some time. MMANA is good too, but there's a lot it can't do. 73 Brian GM4DIJ -- Brian Howie --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com |
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