Updated 4-18-2024 I recently discovered a YouTube video that shows how to cut an antenna’s feedline length to achieve resonance (See below). I then discovered that there are many such erroneous YouTube videos telling you that you can use “jumpers” to improve your antenna performance. There are no benefits to these practices! But this begs the question… Why? On the… Read more »
More on EZNEC at the April 2024 club meeting. Have you dabbled with EZNEC antenna modeling software (or any of the other free NEC derived antenna modeling software applications) and found it just did not work out for you? Join the crowd. At the April meeting of the Chelsea Amateur Radio Club, Wesley Cardone (N8QM) will give a third presentation… Read more »
Here are the slides for tonight’s (March 13, 2024 at 7 PM Eastern DST) presentation. This will be by video conference using the usual club Zoom account. Click here for a direct link. For more information, please see the earlier blog post.
A Qualitative Presentation At last month’s meeting (February 2024), we introduced the free EZNEC antenna modeling software. It was a very introduction-oriented presentation that explained what it was all about. For the March 2024 meeting (Tuesday, March 12th), we will be presenting concepts relating to what EZNEC software demands from you, the user. That is, what ratios in wire lengths… Read more »
With the help of Jim Grissom (WD8RFW), we embarked upon an ambitious program to consider if his HF vertical, 4-band, antenna could be optimized. Whether it is actually optimized or not is somewhat irrelevant although it is known that our task will optimize the antenna for its 40 meter band. Our task to to see if we can shift the… Read more »
At the Chelsea Amateur Radio Club we try not to let you down. Last month (February, 2024) we introduced you to the EZNEC antenna modeling software. Our plan for the March meeting (March 12, 2024) is to use either EZNEC or 4NEC2 to model and simulate Jim Grissom’s (KD8RFW) back yard HF trapped vertical antenna. We have not done it… Read more »
It was about two years ago that the EZNEC Antenna Modeling Software was made free. Wes Cardone (N8QM) purchased this software several years ago (before it was made free) and has found it extremely capable and says that it should not be considered as limited to those with extreme electromagnetics knowledge. This stuff is for the average amateur radio operator…. Read more »
Please let us know at the Chelsea Amateur Radio Club if learning to use the free antenna modeling software EZNEC would be of interest to you. What might be a nice course of action in learning EZNEC is a tutorial using EZNEC’s own “Test Drive” tutorial. This is a tutorial provided by the EZNEC antenna modeling software which starts you… Read more »
Chelsea Amateur Radio Club member Wesley Cardone (N8QM) has devised an antenna topology he is calling the “Rail-Pole Antenna.” The reader may already be aware that Wes has consistently maintained that all antennas are merely dipole antennas in disguise and this one is no exception. Wes is willing to give a series of presentations to the Chelsea Amateur Radio Club… Read more »
Let Wes know if you would like to see a club presentation on this antenna that he developed. This presentation would likely be split up into a series of three presentations. While the antenna itself is very basic, understanding what it does and why it does it is very technical.