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| Started by | gilber34 <fafa@invalid.com> |
|---|---|
| First post | 2015-11-26 11:35 -0600 |
| Last post | 2015-11-26 23:46 +0000 |
| Articles | 4 — 2 participants |
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Free Antenna programs gilber34 <fafa@invalid.com> - 2015-11-26 11:35 -0600
Re: Free Antenna programs jimp@specsol.spam.sux.com - 2015-11-26 20:27 +0000
Re: Free Antenna programs gilber34 <fafa@invalid.com> - 2015-11-26 17:02 -0600
Re: Free Antenna programs jimp@specsol.spam.sux.com - 2015-11-26 23:46 +0000
| From | gilber34 <fafa@invalid.com> |
|---|---|
| Date | 2015-11-26 11:35 -0600 |
| Subject | Free Antenna programs |
| Message-ID | <n37fsm$ssu$1@speranza.aioe.org> |
http://www.qsl.net/4nec2/ http://hamsoft.ca/pages/mmana-gal.php older http://wb0dgf.com/mininec.htm EZNEC is $89 (?) and user friendly better GUI, has a free demo version useful in a lot of cases
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| From | jimp@specsol.spam.sux.com |
|---|---|
| Date | 2015-11-26 20:27 +0000 |
| Message-ID | <5j6kic-ul2.ln1@mail.specsol.com> |
| In reply to | #535641 |
gilber34 <fafa@invalid.com> wrote: > > > > http://www.qsl.net/4nec2/ > > http://hamsoft.ca/pages/mmana-gal.php > > > > older > > http://wb0dgf.com/mininec.htm > > > EZNEC is $89 (?) and user friendly better GUI, has a free demo version > useful in a lot of cases You finally figured that out after being told how many times now? But, like everything else, you are wrong about the price. It is $99 for EZNEC and $149 for EZNEC+, which has more features. There is a Pro version that requires you have a valid NEC-4 license from the University of California (Lawrence Livermore National Laboratory). There is also the AutoEZ application (not free) that allows you to define an antenna as variable and equations. -- Jim Pennino
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| From | gilber34 <fafa@invalid.com> |
|---|---|
| Date | 2015-11-26 17:02 -0600 |
| Message-ID | <n3831q$n5p$1@speranza.aioe.org> |
| In reply to | #535704 |
On 11/26/2015 2:27 PM, jimp@specsol.spam.sux.com wrote: > gilber34 <fafa@invalid.com> wrote: >> >> >> >> http://www.qsl.net/4nec2/ >> >> http://hamsoft.ca/pages/mmana-gal.php >> >> >> >> older >> >> http://wb0dgf.com/mininec.htm >> >> >> EZNEC is $89 (?) and user friendly better GUI, has a free demo version >> useful in a lot of cases > > You finally figured that out after being told how many times now? > > But, like everything else, you are wrong about the price. > > It is $99 for EZNEC and $149 for EZNEC+, which has more features. > > There is a Pro version that requires you have a valid NEC-4 license from > the University of California (Lawrence Livermore National Laboratory). > > There is also the AutoEZ application (not free) that allows you to > define an antenna as variable and equations. > > $149 + $79, actually not that expensive here is a link to rolling off (phase variation) the edge of a parabolic antenna to reduce backlobe: (1969) https://www.google.com/patents/US3599219 so on C band the outter 4 inches at the edge are intentionally bent back on modern dishes, not to follow a parabolic, to avoid diffraction adding in phase at the backlobe. (Kraus has a lot on parabolics in his "Radio Astronomy" book -may have been limited # of copies of it (?)- the book to have for doing your own radio astronomy, shows what happens to the pattern if your want to focus a degree or two off axis)
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| From | jimp@specsol.spam.sux.com |
|---|---|
| Date | 2015-11-26 23:46 +0000 |
| Message-ID | <k7ikic-j44.ln1@mail.specsol.com> |
| In reply to | #535741 |
gilber34 <fafa@invalid.com> wrote: > On 11/26/2015 2:27 PM, jimp@specsol.spam.sux.com wrote: >> gilber34 <fafa@invalid.com> wrote: >>> >>> >>> >>> http://www.qsl.net/4nec2/ >>> >>> http://hamsoft.ca/pages/mmana-gal.php >>> >>> >>> >>> older >>> >>> http://wb0dgf.com/mininec.htm >>> >>> >>> EZNEC is $89 (?) and user friendly better GUI, has a free demo version >>> useful in a lot of cases >> >> You finally figured that out after being told how many times now? >> >> But, like everything else, you are wrong about the price. >> >> It is $99 for EZNEC and $149 for EZNEC+, which has more features. >> >> There is a Pro version that requires you have a valid NEC-4 license from >> the University of California (Lawrence Livermore National Laboratory). >> >> There is also the AutoEZ application (not free) that allows you to >> define an antenna as variable and equations. >> >> > > $149 + $79, actually not that expensive There is nothing that is "$149 + $79"; wrong again. > here is a link to rolling off (phase variation) the edge of a parabolic > antenna to reduce backlobe: (1969) > > https://www.google.com/patents/US3599219 So what? > so on C band the outter 4 inches at the edge are intentionally bent back > on modern dishes, not to follow a parabolic, to avoid diffraction adding > in phase at the backlobe. > (Kraus has a lot on parabolics in his "Radio Astronomy" book -may have > been limited # of copies of it (?)- the book to have for doing your own > radio astronomy, shows what happens to the pattern if your want to focus > a degree or two off axis) You are a babbling idiot with no understanding of basic RF no matter how many links you dredge up. -- Jim Pennino
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