t. Wikipedia

But why?

Radio receivers can be completely passive, using energy of radio waves themselves to be powered.

Crystal radios work without power according to this principle.

But they're low volume. You'd just need a large enough antenna...

Kerosen Radios are more practicable. I don't know about other frequency , but for UKW you must modify the Crystal Radio or you must have second one.

they were very common in yakutia and the more isolated parts of siberia

radiator = antenna

But then why does it need heatenings?

is of speaker power-up, comrade!

 

Speaking of which; here's a youtube channel of an old lady that travels these parts:

 

https://www.youtube.com/channel/UC2pyVbpYA3deli8oR-N-IQw/videos

 

Achtung: S O U L overdose.

 

Unfortunately, no English subtitles, but you don't really need them to appreciate the nature and the rustic/survivalist way of living the locals still practice.

 

 

I just rechecked and turns out some do! For example:

 

I subcribed her channel years ago.