• 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

We will have to disagree on this one then. Try various angles with a dipole when receiving a circular polarized FM broadcast signal. As long as the dipole remains broadside to the received signal, you can move the antenna from vertical to horizontal and not see any change in signal at any angle. There is not a peak at the vertical and horizontal points when the signal is truly CP.


You'll notice no where in the links you give does it suggest that a CP signal is only polarized at 90 and 180 degrees. In fact it explains that this system sets up a rotating electromagnetic field. This rotating field is present in all polarizations in TX and remains responsive to all polarities in RX. Depending on the orientation of the two elements, it's also possible to have a nearly omni directional CP signal. It's done every day on the FM band in designs like the ERI Rototiller.