MLA-30+ Mag Loop Antenna – Redeemed?

With an S-9+ receive noise floor on the full length dipole antenna, is the mag loop antenna able to redeem itself?

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April 2024 Notes – Is this a “mag loop” antenna?

In response to a couple of viewers who stated, “This is not a mag loop antenna”…

I did some research on this… it would seem you are correct, but… Hahaha! As always, with so many things, “it depends” comes into play.

On page 9.13 of the 2023 (25th edition) ARRL Antenna Book, I found a little box with a statement about the definition of a Mag Loop antenna. It references the Mar/Apr 2020 QEX technical note which defines the boundary as being where the circumference of the loop is less than .05 wavelength. This is where the electric to magnetic field ratio tips in favour of the magnetic field.

In this case, a 1 meter diameter loop is considered a mag loop at frequencies below 4.8 MHz… so on 80 meters, this would be considered a “mag loop”. At 40 meters and above, it clearly does not meet the definition.

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VE6WGM (VE6WO)

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Source by Gregg Messenger – VE6WO