You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Ok guys, I've been suggesting that some combinations of coax length and feed point height might have bad effects with CMC's, and that some other combinations might help us mitigate such problems.

However, due to some of the questions that I've received here, I decided to check closer into my use of the transmission line feature that I presented recently. I now find that changing the data changes the results...just as one might expect. Now I'm sure that what I was originally seeing in these models was just coincidence.

What lead me to change my mind, was making a simple change to the VF value in the Eznec transmission line data feature, and then the results no longer supported my idea.

I can still say that height and feed line length effects how common mode currents are manifested, but I can't continue to say that feed point height and/or feed line length can help us mitigate such currents.

Thanks for all the comments, I probably would not have ever seen the light without some of my friends questions and doubts.

<blockquote data-quote="Marconi" data-source="post: 420348" data-attributes="member: 903">Ok guys, I&#039;ve been suggesting that some combinations of coax length and feed point height might have bad effects with CMC&#039;s, and that some other combinations might help us mitigate such problems. &nbsp;However, due to some of the questions that I&#039;ve received here, I decided to check closer into my use of the transmission line feature that I presented recently. I now find that changing the data changes the results...just as one might expect. Now I&#039;m sure that what I was originally seeing in these models was just coincidence.&nbsp;What lead me to change my mind, was making a simple change to the VF value in the Eznec transmission line data feature, and then the results no longer supported my idea. &nbsp;I can still say that height and feed line length effects how common mode currents are manifested, but I can&#039;t continue to say that feed point height and/or feed line length can help us mitigate such currents.&nbsp;Thanks for all the comments, I probably would not have ever seen the light without some of my friends questions and doubts.</blockquote>

[QUOTE="Marconi, post: 420348, member: 903"] Ok guys, I've been suggesting that some combinations of coax length and feed point height might have bad effects with CMC's, and that some other combinations might help us mitigate such problems. However, due to some of the questions that I've received here, I decided to check closer into my use of the transmission line feature that I presented recently. I now find that changing the data changes the results...just as one might expect. [B][I]Now I'm sure that what I was originally seeing in these models was just coincidence.[/I][/B] What lead me to change my mind, was making a simple change to the VF value in the Eznec transmission line data feature, and then the results no longer supported my idea. I can still say that height and feed line length effects how common mode currents are manifested, but [B][I]I can't continue to say that feed point height and/or feed line length can help us mitigate such currents.[/I][/B] Thanks for all the comments, I probably would not have ever seen the light without some of my friends questions and doubts. [/QUOTE]

Top Bottom