• 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

Nothing to do with impedance?  Why is it then when you build an antenna there is a dip in impedance at the resonant points?  As you approach a resonant point the impedance in the antenna drops, and after you pass resonance impedance then goes back up.  At the resonant point there may be 5 ohms, 120 ohms, 600 ohms, or any other value.  I only stated that at resonance it will be at its lowest impedance.  I have seen this multiple times with multiple analyzers over the years on both antennas I have built and tuned for myself and others.  To say they have absolutely nothing to do with each other is simply not true.  And just to make sure we are on the same page, I'm talking about the impedance of the antenna itself.  This has nothing to do with a transmission line.


Take a look with an Antenna Analyzer that graphs the various functions.  You will see the low impedance point consistintly line up with the resonant frequency.


The rest of what you typed is true, the same antenna is resonant on every frequency you mentioned, and more.  80 meters for example, it is a (or very close to) quarter wave antenna, and it should still be resonant.



The DB