Now I have also used 4NEC2 and although 4NEC2 has some really lovely features in terms of graphical output it is a little bit more tricky to get a beginner to be able to use it correctly than EZNEC, although I do like 4NEC2 considerably and do a lot of antenna analysis work using both programs. 8 dbi for a quarter wave vertical using models with aluminum or copper wire which have real world losses in the models. Modeling the W6NL 40m Moxon Greg Ordy, W8WWV April 13, 2012 V1. EZNEC-ARRL v. 25 dBi 34 -j429 vs 6. Initial testing looks promising. Full versions of 4NEC2 (NEC4NEC2 (NEC--2) and MMANA are available on 2) and MMANA are available on line. Until recently, my tower supported a pair of phased 40 meter delta loops. The inductive and the capacitive reactance cancel as in a parallel tuned circuit. An Soft has suprised me, where NEC had issues. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. Any azimuth or elevation slice can be highlighted. The Gray-Hoverman Antenna For UHF Television Reception March 11, 2008 Updated March 22, 2008 (corrected SBGH performance plots) This project is dedicated to Doyt R. It ought to be a specification item for low Insertion VSWR baluns, but it rarely given. G3RJV on one and done projects, Sodder vs. It operates as a normal EZNEC demo program except when a specially 'signed' EZNEC description file (included on the Antenna Book CD) is. These files may also be imported into 4NEC2 by Arie Voors Listing of the files. A balun isn't a NEC primitive, it would have to be modelled. Yes, even in the 21 st century there are some things best left to craftspeople. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. Carolina Windom Compared with Dipole - 20m: 4NEC2 using a. EZNEC Antenna Software EZNEC and EZNEC+ are powerful but very easy-to-use programs for modeling and analyzing nearly any kind of antenna in 4nec2 Antenna Creating Software Powered by Blogger. For contester there is a split in desired TX and RX antenna performance: for. Antenas para radioaficionados. Chapter Fourteen - Antenna Menagerie! To install the 4nec2 package, follow the below steps. 4NEC2 Free NEC-2 software with excellent GUI - new web site 3-1-13. exe file if you check the 'manual select' option. Finding that my previous version EZNEC 3. EZ file from ARRL 22nd Ed. The coupler was tuned to resonance on the bench first using a resistive load. 0 with the 21st Edition. 8 dbi for a quarter wave vertical using models with aluminum or copper wire which have real world losses in the models. ( The 80 meter version was used for Field Day 2006 in Olympia, WA by the Olympia Amateur Radio Society). I don't know what caused all the damage but I'll confess to blowing up the 723CN regulator by plugging. 45, using the NEC4D engine. 4NEC2 - modeling software Antenna Elmer ELNEC/EZNEC - modeling software G4FGQ Antenna Software Height Of Dipoles - from AA3RL Remote S-Meter Right Triangle Angle And Side Calculator VE3SQB's ANTENNA DESIGN PROGRAMS W4NEQ Doublet Info. For this reason, NEC-based softwares (like 4NEC2, Eznec, MMana, etc. The only difference between the demo and standard programs is that the demo program allows only 20. The “Geometry” tab in the “4nec2 Edit” window is where you will define your antenna’s structure. Note that L1 is grounded at one end, and L3 has almost as many turns as L1 (6. Carolina Windom Compared with Dipole - 20m: 4NEC2 using a. 0 NEC-2 1500 $139 EZNEC Pro/2 NEC-2 20,000 $500 EZNEC Pro/4 NEC-4 20,000 $650 •EZNEC-ARRL 3. doc format, providing all dimensions. Here are specific instructions on how to use 4NEC2 with TANT. We do not use "amateur" programs like EZNEC Pro/4 - NEC4, 4NEC2, EZNEC, YO or AO. The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling system for wire and surface antennas. Overview with BYDIPOLE. 25 dBi 34 -j429 vs 6. 0 Members and 1 Guest are viewing this topic. I had previously taught myself the free version of EZNEC, but, was limited to a mere 20 segments with that. The 4NEC2 is so much more powerful, and, for free, than the expensive EZNEC platform for NEC2. That's because it's a full EZNEC v. Yes, even in the 21 st century there are some things best left to craftspeople. Many softwares have been developed during the subsequent years which use the old NEC engine. EZ file from ARRL 22nd Ed. Michael Sanchez 3,068 views. Thanks to the BAA RA page, the [email protected] articles and a lot of online research, three or four days in and I think Im getting somewhere. 0 demo, and started working with it. ) > The example file is set up to plot the pattern in the horizontal plane > of the antenna. A balun isn't a NEC primitive, it would have to be modelled. all provide within the limitation the same result (logical) But all have more or less the same "borders". This is a 3 rd party book and is not connected to Arie in any way. 1 Steve Stearns, K6OIK ARRL Pacificon Antenna Seminar, Santa Clara, CA October 12-14, 2012 Transmission Line Filters Beyond Stubs and Traps Steve Stearns, K6OIK Technical Fellow Northrop Grumman Electromagnetic Systems Laboratory San Jose, CA. This was for a 5-turn, thin-wire, 1m-diameter loop. 0 with the 21st Edition. Since 1988 we have been manufacturing amateur radio antennas, preamplifiers and band-pass filters all of which have unparalleled performance and an excellent reputation for strength, reliability and longevity. Through this software, you can easily find out four important parameters to build this antenna namely, Radiator length, Driven Stud length, Gap space, and Feedpoint. EZNEC-ARRL v. There are also over 30 other amateur radio programmes included. NEC-LIST:4nec2 version 4. CM4221 SBGH vs. 0 demo program, you'll be able to see exactly how EZNEC v. My experience with it has been extremely favorable on 160m, 80m and 40m as I cannot put up multiple long. Sign Up and you will receive a free @qsl. Ground loss and wire loss were set to zero (free space condition). EZNEC-ARRL v. Modeling the W6NL 40m Moxon Greg Ordy, W8WWV April 13, 2012 V1. 02 2268 -j1565 44 33 Angle of radiation remained identical 6 feet ends. In order to show how clean the pattern is on this antenna, I have presented below first the Elevation plot then the Azimuth plot from 4NEC2 modelling program. (They also model parameters like impedance to assess the power efficiency of the antenna and transmission line combination. Subject: Topband: Shared Apex Loop Array Terry W7KW, Yesterday I posted a message here about the Shared Apex Loop Array. The severe limitations of EZNEC-free don't shine a candle to 4nec. The experimental designs shown above have not yet been built or tested. 01 This note looks at the antenna and antenna model for the 40 meter Moxon Yagi designed by Dave Leeson, W6NL. I like to place the LPCAD. 45, using the NEC4D engine. My Product Review of it will appear in the April QST. EZNEC plots azimuth and elevation patterns; tells you gain, feedpoint impedance, SWR, and current distribution; finds and reports beamwidth, 3-dB pattern points, f/b ratio, takeoff angle, sidelobe characteristics; and more. does anyone know if similar downloads for designing other antenna types beside yagi's. EZNEC is a powerful but very easy-to-use program for modeling and analyzing nearly any kind of antenna in its actual operating environment. I've been thinking a lot about building a lazy-H (two horizontal collinears stacked vertically) that fires East-West. 5 ($89) EZNEC+ v. This fine simulation package is available from W7EL Roy Lewallen at www. Also SWR, input impedance,. I had previously taught myself the free version of EZNEC, but, was limited to a mere 20 segments with that. Broadband HF Folded Dipole Antennas at QRP power levelsany experience with them out there ? The advantage of these is "no tuner required". But 4NEC2 was top secret for a long time, no export allowed and still today very expensive (= starting at 2000$). A balun isn't a NEC primitive, it would have to be modelled. (4nec2 can also import eznec antenna files). The 216CP features a single-point feed for a 50 ohm input RHCP beam. Table of Contents Advanced Antenna Modeling 1 Table of Contents About the Author Forewords Acknowledgments Chapter 1: Introduction Introduction - - - - - - - 1. A few things of note: Primary antenna is a 105′ long inverted V with the apex at 37′ and the ends at 0′. The author isa keen enthusiast of the Moxon Rectangle antenna, invented by the late Les Moxon, G6XN. 0 demo, and started working with it. 5 feet high by 4. - Written in BASIC for PCs - Has some known flaws compared to NEC Antenna Modeling Products Public Domain (Free) 4nec2 - Modeling and optimization program (Dutch) MMANA - By JE3HHT, Makoto (Mako) Mori (MININEC) EZNEC Demo 4. 1 wL for Yagis less than 2 wL of boom length. This fine simulation package is available from W7EL Roy Lewallen at www. The 4NEC2 models indicate that it will have a F/B on 160M of better than 50 dB and an RDF (thanks Tom for this measure) of about 11. 4NEC2 - summary on its output, it is a measure of imperfection of the balun. Sign Up and you will receive a free @qsl. Yes, even in the 21 st century there are some things best left to craftspeople. Cebik W4RNL’s website on antennex. –EZNEC NEC-2 engine. It ought to be a specification item for low Insertion VSWR baluns, but it rarely given. I don't know 4nec2, just regular NEC. 0 Members and 1 Guest are viewing this topic. A description of my other short 20 m dipoles (2x 3 m / 2x 10 ft fishing poles and 2x 2½ m / 2x 8 ft) is on this page. –EZNEC or 4nec2 are the most popular –Start with the best basic features, get fancy later –Try both with a basic model to see which you like. com –Tutorials by Cebik and Ordy W8WWV online. EZNEC 5+ by Roy Lewallen W7EL,4NEC2 by Arie Voors and Tant. EZNEC* claims this antenna has around 11. 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. With a sample version and a full (paid) version of the book, the reader will start from downloading and installing 4NEC2, learning the 4NEC2 user interface, build a 20M dipole and analyze it at various heights above real ground then view the different antenna patterns. Antenna performance prediction is a "rocket science", fortunately well understood and available cheaply (some free) in variants of the National Electromagnetic Code developed on mainframes a long time ago. On testing after fabrication, received signal strength was 60dB compared to 45dB obtained with the service provider's. 0 demo, and started working with it. QUCS also has a built in optimizer. For contester there is a split in desired TX and RX antenna performance: for. Starting EZNEC Modeling 1 CTU, Dayton, 2011 How to Start Modeling Antennas using EZNEC Greg Ordy, W8WWV CTU, Contest University Dayton, May 19, 2011 Version 1. When run this model in 4NEC2 with a F= 299. 1/2 Wave J-Pole EZNEC Shootout. It was originally written in FORTRAN in the 1970s by Gerald Burke and Andrew Poggio of the Lawrence Livermore National Laboratory. You simply double the applied voltage (if that matters for actual total power), and divide the impedance by 4 afterwards. Lewallen and many more programs are available for instant and free download. 4nec2 is easy to use and comes with a basic 3D editor to help. 4nec2 and Eznec have more or less the same `thing` going on. Same boom length, same height 35 feet above ground. As AGT is calculated in freespace on the amount of power (loss) from a 3d plot. EZNEC or 4nec2 Of the numerous "front ends" available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. NEC visualization, optimization and sweeping tool The 4nec2 tool is a windows- and Nec-2 or Nec-4 based tool for both the starting and experienced antenna modeler that can be used to create, view and check your antenna geometry structure and generate, display and compare near- and far-field radiation patterns. •Add more references. Table of Contents Advanced Antenna Modeling 1 Table of Contents About the Author Forewords Acknowledgments Chapter 1: Introduction Introduction - - - - - - - 1. 1/2 Wave J-Pole EZNEC Shootout. With a sample version and a full (paid) version of the book, the reader will start from downloading and installing 4NEC2, learning the 4NEC2 user interface, build a 20M dipole and analyze it at various heights above real ground then view the different antenna patterns. For example, 4Nec2 and EZNEZ are based on NEC-2, but others such as MMANA-GAL are based in variations of MININEC [Ref. Full versions of 4NEC2 (NEC4NEC2 (NEC--2) and MMANA are available on 2) and MMANA are available on line. 1 Steve Stearns, K6OIK ARRL Pacificon Antenna Seminar, Santa Clara, CA October 12-14, 2012 Transmission Line Filters Beyond Stubs and Traps Steve Stearns, K6OIK Technical Fellow Northrop Grumman Electromagnetic Systems Laboratory San Jose, CA. There are sample antenna files and event other antenna modelling software including EZNEC, MININEC Pro and 4nec2. Ubbe: please point me to a EZNEC file for a quarterwave that shows 8 dbi over real earth? Even the stock 1/4 models supplied with eznec or those in 4nec typically only produce 1. In any nec2 program, such as 4nec2, you define your antenna by first building a series of lines. The circuit was implemented in the KW E-ZEE Match. Download EZNEC - Easy-to-use program for modeling and analyzing nearly any kind of antenna as well as similar components in its actual operating environment. The recent versions of EZNEC include a transformer emulation capability that might be of interest to end-fed experiments. CM4221 SBGH vs. NEC-2 actually has 2D surface patch elements, but I'm not sure if you can use them from 4NEC2. by Arie Voors 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Page 1 of 2 - Infected with mysearchdial and possiably with fake mozilla, where to start. HamCAP and Type 13 & 14 Antennas HamCAP User's Guide. net Competitive Analysis, Marketing Mix and Traffic. Table of Contents. All basic software like MMANA 4NEC2 EZNEC AM etc. If necessary you can download a free maintenance update: for EZNEC Demo users here, for Standard and Plus users here, for Pro/2 and Pro/4 users see the URL for updates printed on your EZNEC Pro CD label. It is arguably simpler, and in some cases more powerful, than other antenna modelling software such as EZNEC or 4nec2, and that is why it has become popular for relatively simple antenna modelling. (4nec2 can also import eznec antenna files). Please note: 4NEC2 is an unbelievable huge tool with infinite possibilities. Then, having read that. It's a lot better than 4nec2. MMANA - different engine, and free. Ground Ground affects the antenna in 3 ways: 1. The 4NEC2 models indicate that it will have a F/B on 160M of better than 50 dB and an RDF (thanks Tom for this measure) of about 11. Handbook - Duration: 9:35. Also SWR, input impedance,. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. Javad Pourahmadazar. Its large elements and close spacings (. –Antenna Book, Antenna Experimenters Guide (G3LDO) –L. Subject: Topband: Shared Apex Loop Array Terry W7KW, Yesterday I posted a message here about the Shared Apex Loop Array. 1 Antenna Models Used in this Book - - - - 1. That's because it's a full EZNEC v. L = half wave dipole), and radius = 0. Changing the field illuminating the antenna,. 0 which is included on the ARRL Antenna Book CD. My Product Review of it will appear in the April QST. 3004 ohms of load resistance in series with 40. Click on the image to the left to see a screen shot from EZNEC v. Typical half wave patches have efficiencies well above 90%. I have only found a small bit of recent data [ 2 ] comparing an 1. EZNEC-ARRL is a special version of EZNEC v. All basic software like MMANA 4NEC2 EZNEC AM etc. The best matching system for feeding a grounded Marconi element, unless we are very lucky or very careful in planning the installation, is a simple gamma capacitor and shunt feed conductor with the tap point adjusted to find 50 ohms resistive. 1 Steve Stearns, K6OIK ARRL Pacificon Antenna Seminar, Santa Clara, CA October 11-13, 2013 Bode, Chu, Fano, Wheeler: Antenna Q and Match Bandwidth Steve Stearns, K6OIK Technical Fellow Northrop Grumman Electromagnetic Systems Laboratory. The inductive and the capacitive reactance cancel as in a parallel tuned circuit. Windows 10. Size 174x240mm 80 pages ISBN: 9781 9101 9300 6. EZNEC or 4nec2 Of the numerous “front ends” available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. Eznec gives the 1. net e-mail address that forwards to your existing e-mail account, along with free web. EZNEC Antenna Software EZNEC and EZNEC+ are powerful but very easy-to-use programs for modeling and analyzing nearly any kind of antenna in 4nec2 Antenna Creating Software. 7 wL of boom length • Yagis H-plane: the formula tends to produce too close spacing by approx. 4nec2 files are included in *. EZNEC plots azimuth and elevation patterns; tells you gain, feedpoint impedance, SWR, and current distribution; finds and reports beamwidth, 3-dB pattern points, f/b ratio, takeoff angle, sidelobe characteristics; and more. One is to dispense with the 50:75 ohm balun and just suffer with a. Antennas made from conductors installed flush with the ground are not a new idea. Let's look at the current distribution and radiation resistance in 4nec2. VSWR of the six-band 200 Ω CL-OCFD as a function of frequency. Lets do a simple Eznec Pro4 demonstration of a simple 2 element Cubical Quad versus a Yagi antenna. This fine simulation package is available from W7EL Roy Lewallen at www. 001m, we get a value for Za of 70. 2 User Manual and Appendix for additional information on the use of TANT. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. 45, using the NEC4D engine. net Competitive Analysis, Marketing Mix and Traffic. 42 51 -j86 20 meter 8. 2 User Manual and Appendix for additional information on the use of TANT. Also, this region is dominated by radiated fields, with the E- and H-fields orthogonal to each other and the direction. Below I have included what I beleive to be much closer to accurate models of my 160m doublet which is 240. The QUCS RF circuit simulation program has the ability to model SWR, bandwidth, matching networks based on data about antenna performance. In any nec2 program, such as 4nec2, you define your antenna by first building a series of lines. A description of my other short 20 m dipoles (2x 3 m / 2x 10 ft fishing poles and 2x 2½ m / 2x 8 ft) is on this page. EZNEC* claims this antenna has around 11. Example of using 4NEC2 to read the 20m Carolina Windom EZNEC format file from the ARRL 22nd Edition Antenna Book compilation of. Right: 3D far field pattern, with 2D elevation "slice" highlighted. Join Date Sep 2006 Posts 121 Helped 19 / 19 Points 2,626 Level 11. The use of NEC4D over real soils gives the correct interaction between ground and the antenna. 0 (the free version) antenna design program. So no, it's not good practice, but it'll work just fine if that's all the space you have. The performance of the antenna, through the model, will be explored in several typical settings. Michael Sanchez 3,068 views. 1 Steve Stearns, K6OIK ARRL Pacificon Antenna Seminar, Santa Clara, CA October 12-14, 2012 Transmission Line Filters Beyond Stubs and Traps Steve Stearns, K6OIK Technical Fellow Northrop Grumman Electromagnetic Systems Laboratory San Jose, CA. As far as I know, you couldn't use them in EZNEC (as of the 5+ version I have). Thanks to the BAA RA page, the [email protected] articles and a lot of online research, three or four days in and I think Im getting somewhere. Note that L1 is grounded at one end, and L3 has almost as many turns as L1 (6. The difference was < 1dB. 0 or EZNEC v. With a sample version and a full (paid) version of the book, the reader will start from downloading and installing 4NEC2, learning the 4NEC2 user interface, build a 20M dipole and analyze it at various heights above real ground then view the different antenna patterns. Through this software, you can easily find out four important parameters to build this antenna namely, Radiator length, Driven Stud length, Gap space, and Feedpoint. I used symbolic format. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. –EZNEC or 4nec2 are the most popular –Start with the best basic features, get fancy later –Try both with a basic model to see which you like. EZNEC or 4nec2 Of the numerous “front ends” available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. The NEC files may be used with any of the NEC-2 or NEC-4 programs such as 4NEC2, GNEC or cocoaNEC, however some of them with tapered elements may only be simulated accurately by NEC-4 or other MININEC-based software. Please refer to the TANT V1. This banner text can have markup. VSWR of the six-band 200 Ω CL-OCFD as a function of frequency. Modifying the currents in the segments due to near-field interaction, 2. ez: EZNEC v. 0 programs function on Windows XP(SP3)* and later Windows operating systems, 32 or 64 bit. Previously I had created a couple of antenna models using the 4NEC2 software however as I slowly continue to learn how to navigate the software and accurately model an antenna I found that my first model was way off, and that would include my assesment of the triangle loop at 1100 feet. The program may work with other file types as well, but you will not be able to view the antenna patterns. With a sample version and a full (paid) version of the book, the reader will start from downloading and installing 4NEC2, learning the 4NEC2 user interface, build a 20M dipole and analyze it at various heights above real ground then view the different antenna patterns. Chapter Fourteen - Antenna Menagerie! To install the 4nec2 package, follow the below steps. 5D and planar 3D problems are impossible to solve using NEC. Full versions of 4NEC2 (NEC4NEC2 (NEC--2) and MMANA are available on 2) and MMANA are available on line. Hoverman (b. 0 or EZNEC v. The unbalanced input is at the terminal at the top left, and J4 is used for 80 and 40m output, J3 used for 20 to 10m output. An Soft has suprised me, where NEC had issues. 4NEC2 version 5. does anyone know if similar downloads for designing other antenna types beside yagi's. This the latest expensive version ($1500 now) of the software, which only very few guys use, because the 35 year old version is now free. ez: EZNEC v. A description of my other short 20 m dipoles (2x 3 m / 2x 10 ft fishing poles and 2x 2½ m / 2x 8 ft) is on this page. Javad Pourahmadazar. The 14el Elevation plot presented in the 4nec2 antenna modelling package. Where Do I Start? •Which programs? -EZNEC or 4nec2 are the most popular -Start with the best basic features, get fancy later -Try both with a basic model to see which you like •Add more references -Antenna Book, Antenna Experimenters Guide (G3LDO) -L. NEC-2 actually has 2D surface patch elements, but I'm not sure if you can use them from 4NEC2. For this reason, NEC-based softwares (like 4NEC2, Eznec, MMana, etc. Now select 'Edit->Input (. 0 and 4NEC2 as the major players in terms of up to date software. I decided one interesting way to explore the mystery would be to build a simulator. Where Do I Start? •Which programs? -EZNEC or 4nec2 are the most popular -Start with the best basic features, get fancy later -Try both with a basic model to see which you like •Add more references -Antenna Book, Antenna Experimenters Guide (G3LDO) -L. 2015 - HF antenna stopped working. The only difference between the demo and standard programs is that the demo program allows only 20. 4NEC2 (NEC-2 and -4) (NEC-2 free, NEC-4 $300) Antenna Model (corrected MININEC) $90 MMANA-GAL (raw MININEC with benefits) (free) Trial versions of EZNEC (NEC-2) and NEC2GO are available on line. 01 This modeling tutorial is the companion document to a slide presentation given at a Contest University session on May 19 th, 2011. The “Geometry” tab in the “4nec2 Edit” window is where you will define your antenna’s structure. 06 Antenna Optimizer to find a configuration that minimized response to the rear. G3RJV on one and done projects, Sodder vs. Note : It is quite possible, that other calculators deliver slightly different results. In vederea respectarii Regulamentului (UE) 2016/679 privind protecția persoanelor fizice în ceea ce privește prelucrarea datelor cu caracter personal și privind libera circulație a acestor date, incepand cu data de 25 mai 2018 la Radioamator. EZNEC is now able to run under Linux using the wine emulator. Please note: 4NEC2 is an unbelievable huge tool with infinite possibilities. Or the data can come from a measurement made by a good antenna analyzer. EZNEC or 4nec2 Of the numerous "front ends" available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. The modeling EZNEC used Pro4 v. You simply double the applied voltage (if that matters for actual total power), and divide the impedance by 4 afterwards. The TANT instruction manual goes into great detail regarding the use of EZNEC to generate this text file, but does not mention 4NEC2. In other words, the antenna "looks like". EZNEC/EZNEC+ and EZNEC Pro (W7EL) NEC-Win Plus, NEC-Win Pro, GNEC "Nittany Scientific" - now out of business. Resources listed under dipole category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. It comes in two versions, the basic version which is free, and the PRO version which is paid. Can be interfaced to HFwin32 propagation prediction software. 0 is included with the 20th Edition and EZNEC-ARRL v. This article summarizes some useful advices for efficient antenna simulation with programs based on the NEC-2 algorithm, developed by the Lawrence Livermore Laboratory. This month we’ll work with three clusters of ideas: the. all provide within the limitation the same result (logical) But all have more or less the same "borders". Amateur Radio October 2014 1 Volume 82 Number 10 October 2014 The Journal of the Wireless Institute of Australia ISSN 0002-6859 Editorial Editor Peter Freeman VK3PF. It operates as a normal EZNEC demo program except when a specially 'signed' EZNEC description file (included on the Antenna Book CD) is. 4nec2 or MMANA Vs EZNEC freeno contest whatsoever. 0 works, what it does -- and doesn't -- do, and how it's used. 32pF on 1821kHz. I use this for my backyard hobby (amateur) design work; don't know how valid it is but has always seemed to be accurate. The antenna presented here is based on an EZNEC model that uses G3TXQ's tapered segmentation, K4KIO's closer element spacing, and HB9MCZ's square aluminum transmission line. These plots show much more clearly then EZNEC. EZNEC 5+ by Roy Lewallen W7EL,4NEC2 by Arie Voors and Tant. Mit der Zeit entstand ein höherer Bedarf, Flächen und Körper. It's a lot better than 4nec2. Until recently, my tower supported a pair of phased 40 meter delta loops. This is a 3 rd party book and is not connected to Arie in any way. Please find below all the Crosswords With Friends May 4 2020 Answers. Finding that my previous version EZNEC 3. When I started with EZNEC the 4NEC2-program was not on the "market". Those craftspeople also know a few other tricks. 5 ($89) EZNEC+ v. 4NEC2 (NEC-2 and -4) (NEC-2 free, NEC-4 $300) Antenna Model (corrected MININEC) $90 MMANA-GAL (raw MININEC with benefits) (free) Trial versions of EZNEC (NEC-2) and NEC2GO are available on line. We use an interpolation approach. 01 This modeling tutorial is the companion document to a slide presentation given at a Contest University session on May 19 th, 2011. All basic software like MMANA 4NEC2 EZNEC AM etc. That left a TIP29 transistor and an MCR225 SCR, which I've elected to replace instead of test. This series of articles cleared up a number of misconceptions I had. Antennas that are more expensive, bigger, and in violation of local building 4NEC2 and EZNEC are just a fancy front and back ends for NEC2 (and NEC4) Engines. 1 dBic gain (RHCP) with no phasing lines. EZNEC is now able to run under Linux using the wine emulator. 4nec2 or MMANA Vs EZNEC freeno contest whatsoever. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout Categories Antennas , NEC Shootouts Tags 43 foot , BigIR , EZNEC , NEC , Simulation , SteppIR 1/4 Wave Monopole vs. Page 1 of 2 - Infected with mysearchdial and possiably with fake mozilla, where to start. EZNEC-ARRL is a special version of EZNEC v. Now select 'Edit->Input (. 0 demo, and started working with it. EZNEC/EZNEC+ and EZNEC Pro (W7EL) NEC-Win Plus, NEC-Win Pro, GNEC "Nittany Scientific" - now out of business. Lewallen and many more programs are available for instant and free download. now on 4nec2 select 'File->Open 4nec2 in/out file' and open the empty file you just created (e. Or the data can come from a measurement made by a good antenna analyzer. Antenas para radioaficionados. I cannot speak to MMANA because I haven't used it. Several Commercial UHF Antennas: SBGH vs. 48 118 + j316 12 meter 10. 0 works, what it does -- and doesn't -- do, and how it's used. On arrival, it has all 4 pass transistors blown, the 723CN regulator blown, two 1N4002 diodes shorted, and a 2N3906 shorted. CO8TW Juan Carlos Veranes Ferrer Enero / 2017. This is a 3rd party Downloading and installing 4NEC2 will be covered in this chapter. The spark transmitter had a resonant circuit and the transmission was "modulated" by rotary spark gap. Figure 7—A partial EZNEC wires page for a 40-meter vertical monopole with a 32-element ground plane system. 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. This is a very popular game by Zynga which will keep you…. net is dedicated to the sole purpose of furthering the abilities and interest of the Amateur Radio Community. I don't know 4nec2, just regular NEC. (Nobody goes to court over a TV antenna. EZNEC and 4nec2 are based upon the Numerical Electromagnetics Code, or NEC, which is a popular antenna modelling system for wire and surface antennas originally written in FORTRAN in the 1970s by Gerald Burke and Andrew Poggio of the Lawrence Livermore National Laboratory. EZ file from ARRL 22nd Ed. But 4NEC2 was top secret for a long time, no export allowed and still today very expensive (= starting at 2000$). Click on the image to the left to see a screen shot from EZNEC v. Full versions of 4NEC2 (NEC4NEC2 (NEC--2) and MMANA are available on 2) and MMANA are available on line. The following terminology will be used throughout this article (see fig. The TANT instruction manual goes into great detail regarding the use of EZNEC to generate this text file, but does not mention 4NEC2. Previously I had created a couple of antenna models using the 4NEC2 software however as I slowly continue to learn how to navigate the software and accurately model an antenna I found that my first model was way off, and that would include my assesment of the triangle loop at 1100 feet. There is a free Demo version 6 of the program EZNEC but although it is the full program, it is restricted to only allowing upto 20 segments for any antenna design which can be quite restrictive. Yagi Calculator is a Windows program that also runs well on Linux, Ubuntu 8. Είναι αναμφισβήτητα απλούστερο και σε ορισμένες περιπτώσεις πιο ισχυρό από αντίστοιχα λογισμικά μοντελοποίησης κεραιών όπως το EZNEC ή το 4nec2, και γι' αυτό έχει γίνει τόσο δημοφιλές. Eznec gives the 1. All versions of EZNEC, with the exception of Pro 4, use the NEC-2 Engine, the latest public domain version. Voici une reponse de DK7ZB suite a question sur le choix EZNEC vs 4NEC2 ///// Hello Dom, 4NEC2 should work well, because the kernel is the NEC-ll-engine, too. It ought to be a specification item for low Insertion VSWR baluns, but it rarely given. Welcome to Alexa's Site Overview. A description of my other short 20 m dipoles (2x 3 m / 2x 10 ft fishing poles and 2x 2½ m / 2x 8 ft) is on this page. 14 Arie Voors: includes sample Yagi and other antenna files, full pattern and gain analysis. In addition to English (default), Russian (more information about Russian MMANA available on DL2KQ's website: http:\\www. 75t) and is wound a little larger in diameter and over L1, so fairly tightly coupled. 5 ($89) EZNEC+ v. EZ file from ARRL 22nd Ed. A Ham by the call of WB3BEL (Harry) took my dimensions (That I got from the applet) and plotted my antenna into 4NEC2 software (Like EZNEC but freeware) and it would not work for the center frequency of the GMRS Band (or any part of the GMRS band). Here are specific instructions on how to use 4NEC2 with TANT. Full text of "QEX Magazine 1982-2016 For Ham Radio Experimenters" See other formats. You may want to combine it with a folded Dipole. de is quite good. Multe altele ca: EZNEC, ELNEC, GRANDMAX, WIRE, WebPRAC, GRASP, MMANA, AO (Antenna optimizer) sau MININEC și-au făcut tot mai simțită prezența sub umbrela sintagmei free (gratuit). 0 demo, and started working with it. The Beverage antenna is an example of an antenna that is typically installed within a few feet of the ground, but as a special case, it can also be installed directly on the surface — an arrangement called a "Beverage on Ground" or "BoG. –EZNEC NEC-2 engine. 02 2268 -j1565 44 33 Angle of radiation remained identical 6 feet ends. * Intel CPU is required on XP and Vista systems but not on Windows 7 and later. Several other items, such as currents and wire numbers, can be. 4nec2 pretty much relies on whatever the underlying NEC can provide. The two leaders are EZNEC (= not free of charge) and 4NEC2 (= completely free). 0 is included on the ARRL Antenna Book CD 20th Edition. The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling system for wire and surface antennas. It is used to design J-pole antennas for the desired frequency. I seem to recall that maybe you can write raw NEC decks and run them in 4NEC2. Using 4NEC2 is also, once learned, is MUCH easier to use than EZNEC to learn about the antenna system more rapidly due to symbolic representation coupled with optimization. 0, including EZNEC-ARRL. For K6STI AO and NEC/Wires files: Symbols will be converted to AutoEZ variables and formulas. * Note: Intel CPU is required on XP and Vista systems but not on Windows 7 and later. Long yagis are commonly used from the 144MHz amateur band to the 2. Brian Beezley, K6STI, used his AO 8. 1 Antenna Models Used in this Book - - - - 1. 0 NEC-2 1500 $139 EZNEC Pro/2 NEC-2 20,000 $500 EZNEC Pro/4 NEC-4 20,000 $650 •EZNEC-ARRL 3. 7 wL of boom length • Yagis H-plane: the formula tends to produce too close spacing by approx. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad bandwidth and a useful pattern. If you click FF Plot, you'll see only a horizontally > polarized field. Starting EZNEC Modeling 1 CTU, Dayton, 2011 How to Start Modeling Antennas using EZNEC Greg Ordy, W8WWV CTU, Contest University Dayton, May 19, 2011 Version 1. NEC-LIST:4nec2 version 4. So, I don't know why you are mentioning NEC in this thread. Yagi Uda Antenna Calculator. Ham License + HOA = Trouble 2009 - Moved to the area - With expired ham license 2013 - Re-licensed as AC8NE 2013 - Read the HOA agreement - NO ANTENNAS ALLOWED except for TV 2013 - 40-10 M dipole and 2M J-pole in attic - Situation OK but no DXCC etc. Thanks for downloading and reading this Definitive Guide to the widely popular 4NEC2 Antenna Modeling software. all provide within the limitation the same result (logical) But all have more or less the same "borders". Model of a Gamma Arm on the Dipole, all elements equal radius = 1mm, spacing = 25mm. 0 - By W7EL Commercial Nec-Win Plus (similar to EZNEC) K6STI - Various modeling & optimization programs (MININEC) EZENEC 4. was carried out using 4NEC2 antenna design software. Last edited by abcd567 ; 2014-02. The antenna data can come from either an antenna modeling program such as 4NEC2 or EZNEC. I propose tag synonyms of NEC, modeling, EZNEC, mmana, and the names of other commonly used. Long yagis are commonly used from the 144MHz amateur band to the 2. Simple Cutting Software X 2020. org Competitive Analysis, Marketing Mix and Traffic Competitive Analysis, Marketing Mix and Traffic. Stack Exchange Network. 4NEC2 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Also SWR, input impedance,. - Written in BASIC for PCs - Has some known flaws compared to NEC Antenna Modeling Products Public Domain (Free) 4nec2 - Modeling and optimization program (Dutch) MMANA - By JE3HHT, Makoto (Mako) Mori (MININEC) EZNEC Demo 4. 3 (Sat May 18 2002 - 05:28:54 EDT) NEC-LIST:nec-2 arbitrary shape patches (Fri May 03 2002 NEC-LIST: Calculating NEC or EZNEC models with a MININEC engine (Fri Oct 25 2002 - 21:24:21 EDT) NEC-LIST: Combining antenna modeling with real-world feedline calculations. Initial testing looks promising. It operates as a normal EZNEC demo program except when a specially 'signed' EZNEC description file (included on the Antenna Book CD) is. Education software downloads - EZNEC by Roy W. Re: [TowerTalk] help w/ KT34XA, Tony Brock-Fisher, 2009/04/29 [TowerTalk] help w/ KT34XA, Mark Ketchell, 2009/04/29 [TowerTalk] Little things can make a difference, Roger (K8RI), 2009/04/30. The Numerical Electromagnetics Code, or NEC, is a popular antenna modeling system for wire and surface antennas. In order to calculate the AGT in 4nec2 you need to `highlight` a option. It ought to be a specification item for low Insertion VSWR baluns, but it rarely given. 0 is included on the ARRL Antenna Book CD 20th Edition. ln its basic form it'seasy to build and is a great performer. Several Commercial UHF Antennas: SBGH vs. In order to calcualte the AGT in Enzec you need to run a 3d plot in freespace both are the same thing. This was for a 5-turn, thin-wire, 1m-diameter loop. The antenna presented here is based on an EZNEC model that uses G3TXQ's tapered segmentation, K4KIO's closer element spacing, and HB9MCZ's square aluminum transmission line. Our results are optimised for gain, but. 4nec2 or MMANA Vs EZNEC freeno contest whatsoever. We do not use "amateur" programs like EZNEC Pro/4 - NEC4, 4NEC2, EZNEC, YO or AO. In other words, the antenna "looks like". Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. All antennas are complete with all necessary parts. It ought to be a specification item for low Insertion VSWR baluns, but it rarely given. 0 is included with the 20th Edition and EZNEC-ARRL v. Excellent free programs based on NEC2 are available [41] but these do not properly model the groundantenna in- teraction so that results obtained. the current flowing in a very short dipole has a similar distribution to that of a half wave dipole and their directivity patterns are pretty similar, too. 2 User Manual and Appendix for additional information on the use of TANT. But, yesterday I decided I’d install it again and attempt to do some really basic modelling of my current primary antenna. 0 demo requires Windows XP(SP3)* or later Windows operating system, 32 or 64 bit. Covid-19 Monitor the COVID-19 Conversation as it Unfolds Explore COVID-19 articles. Until recently, my tower supported a pair of phased 40 meter delta loops. Since the antenna is resonant, the reactance looking into any other point along the antenna, also has no reactance. In order to calculate the AGT in 4nec2 you need to `highlight` a option. I don't know 4nec2, just regular NEC. 4nec2 pretty much relies on whatever the underlying NEC can provide. ln its basic form it'seasy to build and is a great performer. NEC-LIST:4nec2 version 4. The program may work with other file types as well, but you will not be able to view the antenna patterns. When I started with EZNEC the 4NEC2-program was not on the "market". It comes in two versions, the basic version which is free, and the PRO version which is paid. Same boom length, same height 35 feet above ground. Carolina Windom Compared with Dipole - 20m: 4NEC2 using a. 53 dBi 63 -j74 vs 7. CO8TW Juan Carlos Veranes Ferrer Enero / 2017. 4nec2 files are included in *. G3RJV on one and done projects, Sodder vs. I don't know 4nec2, just regular NEC. This month we’ll work with three clusters of ideas: the. Finding that my previous version EZNEC 3. Winner of the Standing Ovation Award for "Best PowerPoint Templates" from Presentations Magazine. It comes in two versions, the basic version which is free, and the PRO version which is paid. 22 Search Popularity. Previously I had created a couple of antenna models using the 4NEC2 software however as I slowly continue to learn how to navigate the software and accurately model an antenna I found that my first model was way off, and that would include my assesment of the triangle loop at 1100 feet. net e-mail address that forwards to your existing e-mail account, along with free web. I cannot speak to MMANA because I haven't used it. Vertically Stacked Comparisons of 2xFF6, 2xFF4, 2xM4, 2xCM4221, 2x91XG vs FF6 and three Parabolics:. I ran a little EZNEC simulation and compared your situation, vs the far leg of B simply going up an incline but without turning the corner. With assistance, advice, and encouragement from fellow antenna enthusiasts, an ad hoc research and development team came together. One is to dispense with the 50:75 ohm balun and just suffer with a. The performance of the antenna, through the model, will be explored in several typical settings. You may want to combine it with a folded Dipole. The use of NEC4D over real soils gives the correct interaction between ground and the antenna. As its been 7 years since I've done so, I surveyed the available software again and found EZNEC 5. 5 ($139) EZNEC Pro/2 v. In vederea respectarii Regulamentului (UE) 2016/679 privind protecția persoanelor fizice în ceea ce privește prelucrarea datelor cu caracter personal și privind libera circulație a acestor date, incepand cu data de 25 mai 2018 la Radioamator. Below I have included what I beleive to be much closer to accurate models of my 160m doublet which is 240. Learn how to use 4NEC2 in the design and analysis of antenna systems. –Antenna Book, Antenna Experimenters Guide (G3LDO) –L. 0 - By W7EL Commercial Nec-Win Plus (similar to EZNEC) K6STI - Various modeling & optimization programs (MININEC) EZENEC 4. I did have an online discussion with N3OX who very helpfully provided a multi-turn loop model in EZNEC, which I imported into 4NEC2, and I confirmed what he reported: that current distribution can become quite non-uniform with multiple turns. 7 wL of boom length • Yagis H-plane: the formula tends to produce too close spacing by approx. Modifying the currents in the segments due to near-field interaction, 2. I like to place the LPCAD. The program provides ability for changing the language of signs and messages of the program. Temperatures initially used: Tsky=20 degrees;Tearth=350 degrees Issue 97: Add InnoV 14 OWL G/T v2,InnoV 13 OWL G/T v2,InnoV 12 OWL G/T-2,InnoV 14 OWL G/T-2Q,InnoV 11 OWL G/T-2,. Also SWR, input impedance,. Changing the field illuminating the antenna,. Unfortunately, I think you'd have to do a lot of non-GUI stuff. Introduction Yagi antenna is made up of elements such as radiator, directors and a dipole which is the active component of the antenna. G3RJV on one and done projects, Sodder vs. G3TXQ's EZNEC model is based on a wider element spacing than the version published in QST by K4KIO. (Nobody goes to court over a TV antenna. Channel Master 4221 4-Bay Reflector UHF Antenna: SBGH vs. Caution Alert for 4nec2/EZ models of commercial Yagi antennas It is well known that with metal boom Yagi antenna designs, a Boom-Correction factor (BC) must be applied to the lengths of the reflector and director elements to compensate for the shortening effect caused by the metal boom. Lets do a simple Eznec Pro4 demonstration of a simple 2 element Cubical Quad versus a Yagi antenna. 2 engine) do not model, build or recommend non-conventional Yagi fed arrangements. Antennas made from conductors installed flush with the ground are not a new idea. 25 dBi 34 -j429 vs 6. Figure 6 - SWR vs "Counterpoise" Length vs Turns Ratio for an End Fed Half Wave Free Space Antenna. txt: Free: EZNEC version 5 Roy Lewallen W7EL: includes sample Yagi and other antenna files, full pattern and gain analysis. In this region, the radiation pattern does not change shape with distance (although the fields still die off as 1/R, the power density dies off as 1/R^2). Open a model file. Fortunately, Leo (K4KIO) has done all the hard work for us and provided a spreadsheet which takes Hexbeam dimensions as inputs and which produces an output file that can be read directly into EZNEC. 4nec2 and Eznec have more or less the same `thing` going on. de is quite good. 43 Foot Vertical Antenna @ 15 meters EZNEC Shootout Categories Antennas , NEC Shootouts Tags 43 foot , BigIR , EZNEC , NEC , Simulation , SteppIR 1/4 Wave Monopole vs. That's because the field is purely horizontally > polarized in the horizontal plane of the antenna, as I mentioned. EZNEC or 4nec2 Of the numerous “front ends” available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. Javad Pourahmadazar. 0 Ventajas de la línea abierta: Cuando su dieléctrico es de aire provee muy bajas pérdidas, especialmente en HF y si se la puede montar separada de los objetos, sobre todo los metálicos. Through this software, you can easily find out four important parameters to build this antenna namely, Radiator length, Driven Stud length, Gap space, and Feedpoint. The antenna data can come from either an antenna modeling program such as 4NEC2 or EZNEC. 1 Steve Stearns, K6OIK ARRL Pacificon Antenna Seminar, Santa Clara, CA October 11-13, 2013 Bode, Chu, Fano, Wheeler: Antenna Q and Match Bandwidth Steve Stearns, K6OIK Technical Fellow Northrop Grumman Electromagnetic Systems Laboratory. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. 0 antenna modeler. The program may work with other file types as well, but you will not be able to view the antenna patterns. The theory works for ANY frequency you choose, from below 160 meters to way above 440 MHz. 3 Available at Date of Publishing, 2019 - - - 1. 34 (the current version) or later is required. all provide within the limitation the same result (logical) But all have more or less the same "borders". Table of Contents. First of all we would like to thank you for visiting our site. Eznec is for example expensive but when u do use it a lot it is sure worth the effort other programmers like 4nec2 are great but you do need spare time to learn how to use it. A balun isn't a NEC primitive, it would have to be modelled. 4nec2 and Eznec have more or less the same `thing` going on. This fine simulation package is available from W7EL Roy Lewallen at www. My experience with it has been extremely favorable on 160m, 80m and 40m as I cannot put up multiple long. Carolina Windom Compared with Dipole - 20m: 4NEC2 using a. 7 wL of boom length • Yagis H-plane: the formula tends to produce too close spacing by approx. I seem to recall that maybe you can write raw NEC decks and run them in 4NEC2. 7) is of actual measured data of an end fed half wavelength antenna with an isolated coupler using an 8:1 turns ratio. Figure 8—A view of the EZNEC model of the vertical monopole and its ground plane. 01 This modeling tutorial is the companion document to a slide presentation given at a Contest University session on May 19 th, 2011. That's because it's a full EZNEC v. If normal 1"Hx2"W Grid Size is used, F/B and F/R Ratios are significantly improved. This is one good reason that modellers using EZNEC +, MMANA, 4nec2 (without the NEC4. The 4NEC2 is so much more powerful, and, for free, than the expensive EZNEC platform for NEC2. It is arguably simpler, and in some cases more powerful, than other antenna modelling software such as EZNEC or 4nec2, and that is why it has become popular for relatively simple antenna modelling. The circuit was implemented in the KW E-ZEE Match. But if you're looking at EZNEC, I strongly recommend looking at 4nec2 first. This is if we are interested in the overall performance of the antenna and its "back" or "side" rejection properties (in addition to gain figures of major lobes). These files may also be imported into 4NEC2 by Arie Voors Listing of the files. Dipole antennas plans category is a curation of 155 web resources on , Classic Multiband Dipole, The Galaxy dipole, All Band Dipole. 01 This modeling tutorial is the companion document to a slide presentation given at a Contest University session on May 19 th, 2011. NEC-2 actually has 2D surface patch elements, but I'm not sure if you can use them from 4NEC2. 0 Members and 1 Guest are viewing this topic. EZNEC or 4nec2 Of the numerous "front ends" available to run NEC, EZNEC and 4nec2 seem to be at the top of the stack. EZ file examples. I have chosen 4nec2 for this first example because in this software we find a separate window for each step of the 'communication' between kernel and user interface = front-end. We perform the design work using the latest professional full-3D electromagnetic modelling. The return path for current is through the. 42 51 -j86 20 meter 8. Here are specific instructions on how to use 4NEC2 with TANT. Yes, there ARE hidden agendas! Below is a good example as to why 'amateur' antenna modellers cannot provide accurate designs for modern-day direct fed 50Ohm Yagis. The reduced wingspar. Multe altele ca: EZNEC, ELNEC, GRANDMAX, WIRE, WebPRAC, GRASP, MMANA, AO (Antenna optimizer) sau MININEC și-au făcut tot mai simțită prezența sub umbrela sintagmei free (gratuit). 0 is included with the 20th Edition and EZNEC-ARRL v. 3004 -2169j. - posted in Am I infected? What do I do?: i have ran MBAM several times, removed themysearchdial. J-Pole antenna is pretty easy to build and usually designed by amateur radio operators. Since the antenna is resonant, the reactance looking into any other point along the antenna, also has no reactance. VSWR of the six-band 200 Ω CL-OCFD as a function of frequency. EZNEC-ARRL v. Initial testing looks promising. 1/2 Wave J-Pole EZNEC Shootout. This was for a 5-turn, thin-wire, 1m-diameter loop. 60 or later. 1 dBic gain (RHCP) with no phasing lines. EZNEC-ARRL is a special version of EZNEC v. ro - un site al radioamatorilor romani de pretutindeni. 7m AMA 8 Loop to a 20ft marine whip and against predicted data for an optimized 20ft center loaded whip. Ham License + HOA = Trouble 2009 - Moved to the area - With expired ham license 2013 - Re-licensed as AC8NE 2013 - Read the HOA agreement - NO ANTENNAS ALLOWED except for TV 2013 - 40-10 M dipole and 2M J-pole in attic - Situation OK but no DXCC etc. Center: View Antenna display, showing the "wires" making up the model of the five-element beam, with currents and 2D slice superimposed to show orientation. Which for newbies to 4nec2 might be more confusing then with EZNEC but can be an advantage for the experienced user, or after having read this acticle hopefully. Please refer to the TANT V1. 8MHz, L/2 = 0. Obtain cutting patterns for various materials such, as glass, wood or metal and display a graph th Feb 14th 2020, 21:07 GMT. 42 51 -j86 20 meter 8. At this point I got frustrated and posted my issue on QRZ. In Part 2 of Hexbeam modelling we'll take a look at how EZNEC predictions compare to "real world" measurements. Yagi Uda Antenna Calculator. Hoverman (b. The main point of using a resonant antenna is the efficiency with which it will radiate its power and the fact that it is easier to 'match' to a transmitter or receiver. com –Tutorials by Cebik and Ordy W8WWV online. 0 - By W7EL Commercial Nec-Win Plus (similar to EZNEC) K6STI - Various modeling & optimization programs (MININEC) EZENEC 4. The recent versions of EZNEC include a transformer emulation capability that might be of interest to end-fed experiments. Ground loss and wire loss were set to zero (free space condition). ) > The example file is set up to plot the pattern in the horizontal plane > of the antenna. Michael Sanchez 3,068 views. CM4221 SBGH vs. With the EZNEC v. ro - un site al radioamatorilor romani de pretutindeni. Starting EZNEC Modeling 1 CTU, Dayton, 2011 How to Start Modeling Antennas using EZNEC Greg Ordy, W8WWV CTU, Contest University Dayton, May 19, 2011 Version 1. Or the data can come from a measurement made by a good antenna analyzer. exe by Sinisa, YT1NT/VE3EA or AGTC_lite by F5FOD/DG7YBN 2. Figure 8—A view of the EZNEC model of the vertical monopole and its ground plane. L = half wave dipole), and radius = 0.