How come I never saw the original post?

In any case, Antennas IS the PROPER Plural form of the word when used
in reference to: a metallic device (as a rod or wire) for sending out
or receiving radio waves.

Antennae is plural for the word when used in reference to an
arthropod.

Now if your Antenna is covered with growing mildew and moss, I guess
Antennae's would be the more appropos choice, hi hi.....

TTUL
Gary