• 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

And don't forget that what the chart says isn't exactly accurate, either.  A high SWR does not by itself cause any loss in ERP.  It is the act of the RF traveling through the feedline that causes the loss.  Just because there is a mismatch of 2:0:1 at the feedpoint doesn't equate to a magic 11% loss of ERP.  Depending on the length and loss characteristics of the feedline, the actual loss of ERP may be much higher or much less. 


The only thing SWR really tells you is whether or not it is safe to transmit.  For most people running a CB, that's probably really all they need to know anyway once they've chosen the antenna that suits their needs.