Brenda Ann wrote:

No, I believe the issue is that YOU don't seem to understand that there are
clear, listenable signals beyond your precious 10mV/m contours.

Dear Grandma (and grandpa):

Stop fiddling with your tube amplifier, and listen to the radio on the
internet. (Yes you can even do it through a 56K dialup modem.)

World War II is over; come into the 21 century.