In other words, those russian radio transmitters are like open relays? It will amplify any signal you feed to it?
This 40s/50s/60s/70s long distance radio stuff, is pretty much dumb tech. It's not just Russian transmitters, a lot of the old VHF TV was capable of being subverted by brute force injection, and FM radio. All you have to do is assert a stronger time signal and it's going to cohere to it.
There are awesome photos on the Web of these transmitters, huge valves, mercury rectifiers, scary giant coils, oil cooled stuff, it's RF but you treat it like power engineering, because energy is energy: it's "hot".
If you were building one now, you'd send encrypted signal digitally into the gear and avoid as many of the risks as possible. Probably have to be right up close inside the building to phreak the last stage amplifier.
Some ham or ex forces RF person will probably say I got this wrong btw. I'd believe them.
What would I have to google to learn more about this? it sounds fascinating.
https://upload.wikimedia.org/wikipedia/commons/0/04/Pole_2_T...
(human for scale)
and
https://upload.wikimedia.org/wikipedia/commons/thumb/4/42/Me...
This is high power HVDC transmission line gear.
So I remembered back in the day I could hear beeps in my speakers when my cell phone rang and I wondered it I could do the same to his speakers. After a lot of search I found out that a lot of speaker amplifiers were vulnerable to CB frequency injection and being close enough you could actually highjack some vulnerable speakers/amplifiers given you were close enough/transmitting at the right frequency and power.
In the end I just angrily knocked at my neighbor's door at 2AM and complained about the noise, he apologized, turned down the volume and I've never had problems ever since.
I got to know the guy eventually when some other neighbor flooded our toilets by pouring concrete down the toilet drain, he was just a nice uber driver in his 40s having problems with his wife, drinking into the night and listening to dubious gypsy blues that resonated to his sorrows.
In my apt. building the home control system is absurdally easy to hack - literally anyone can hijack their neighbour's light&ac control system via WiFi.
A friend of mine just shuts down lights of their neighbor when they make too much noise after midnight. I was close to doing the same when our neighbors were too loud, but decided on just going there and talking to them :)