Terry wrote:
Is there any sense in putting a Ferrite Rod at the Far End of a Random
Wire Antenna with the End of the Wire Antenna Element "wrapped around
it" in a tuned coil to improve AM/MW Band reception?"

Frequency selectivity improves signal to noise ratio. Antenna tuning
reduces the possibility of receiver input overload. A naturally resonant
length for the medium-wave band will be more than 150 feet, so a coil is
likely needed to resonate a random length of wire.

Placing a coil at the far end of an antenna increases the current below
the coil which makes it more effective. Such an antenna was patented in
1909. A copy of the diagram which was filed on August 10, 1909 by Simon
Eisenstein of Kiev, Russia appears in Fig 9-24 on page 9-17 of the 1994
edition of ON4UN`s "Low-Band-Band DXing". Circuit to the open-end of the
loading coil is completed by a capacitive hat beyond the coil.

The ferrite rod increases the coil core permeability. This allows fewer
turns for a given inductance. A higher Q results in a more efficient
tuned circuit. Multiple methods may be used to resonate an antenna
circuit. Eisenstein used a coil and a capacitive hat for top loading. It
still may not be enough, and can be augmented with other reactances
located elsewhere.

Best regards, Richard Harrison, KB5WZI