@cannabineer has a good story
Ohh yes.
My dad is a retired Ph.D. electrical engineer, so he knows his way around the innards of you-name-the electronic appliance circa 1970.
Our next-door neighbors (catty-corner actually, NW corner) decided to get into amateur radio. The forty-foot truss mast on their roof was kind of a fat tell in that regard.
The other big tell was that when mama had her Easy Listening softly going in the kitchen, there'd be these occasional, and startlingly loud, bursts of vox coming over Mama's FM radio, the loaf-of-bread-sized unit with the ivorette exterior, long tuner bar, and an oval-face electric clock opposite the perforated speaker plate.
"This is (same three letters, same four numerals) calling _____". This happened several times and at all times of the day. It was enough to make one drop one's spoon.
Now the father of that household was, if I remember correctly, a career Marine with a burr under his saddle about damn fer'ners from recent enemy lands. So Dad and Guy got along about as well as the red and the blue kind of rocket fuel, poured into one beaker. As a Germanitarian gesture, Dad went over and provided technical advice to Guy on how to squelch that massive EM leakage from their two-way radio rig. Guy ignored it.
Dad was getting quite pissed that this lout was harshing Mama's buzz in the kitchen. He worked at the time for a firm that had some pretty sweet goodies on the engineers' common shelves, and he knew how to use'm.
So he signed out and brought home a tunable directional RF emitter and an oscillator. He rigged the oscillator to put out a squarewave signal at a god-awful acoustic frequency - somewhere in the "kilohurts" range. He fed that signal into the emitter which had been tuned to the right FM frequency, and pointed it into the five-degree cone that was most likely to contain Guy's radio set.
Turned the electronics on at a respectable power level, and left them in the ON condition for a day or two.
The caterwaul that came out of Guy's radio, out of Guy's TV, out of Guy's FM receiver, possibly out of his ignition wiring, fillings, plumbing ... ohhh I wish I could have witnessed it for myself. It must have been, for not choosing a stronger term, obvious.
Strangely, the radio vox squawks stopped then and did not return.
Bet Dad got an extra big hug from Mama that night. You do NOT casually or lightly go to war with an Austrian. Final score: Austrian 1, Marine 0.
That's MY dad!!
@raratt
