Ian Jackson wrote:

snip

If a permanent magnet was oscillated inside a loop of wire, it would
produce an oscillating current in the loop. An oscillating current would
produce RF radiation (especially if it was tuned with a capacitor to the
frequency of the magnet's oscillation).

In which case you have a generator producing AC voltage.

The question then is, "is the wire loop necessary to produce RF
radiation?"

The wire loop is necessary to produce an AC voltage.

An AC voltage applied to an antenna produces RF radiation.

Before tubes were invented, high frequency AC generators were used to
generate high frequency AC voltage which was applied to antennas.


--
Jim Pennino