W4JLE wrote:
That certainly would explain why the plural of the two different types are
different.

My guess is that the plural for insect antennae came from Latin
and the plural for RF antennas came from a more modern language.
The word "antenna" entered the English language around 1646
from Middle Latin according to my dictionary. There were no
RF antennas in 1646, at least not on purpose.
--
73, Cecil http://www.qsl.net/w5dxp



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