When the earthquake strikes, not only will supplies not come, but also water and gas will not come.

Even if you want to get some information, you cannot use the TV because there is no electricity. Not to mention the Internet. Smartphones are just a matter of time.

I am getting a hand-cranked generator.

The only remaining means of obtaining information is a radio. Still, the radio I bought a few years ago has probably stopped working because the batteries are leaking (that thing is no good unless you turn it on regularly).

However, some radios do not require a power source and work semi-permanently.

"Germanium Radio."

Radio waves from the receiving antenna are detected using a germanium diode (rectifier), extracting the audio signal. This means no power supply is required; simply connecting the antenna and speakers (or headphones) is all that is needed to operate.

It is used for AM broadcasts, which are easier to detect, but NHK radio broadcasts are the only reliable source for disaster information.

(I was surprised that some people are trying out the powerless FM radio.)

One of the reasons I pay NHK subscription fees is this "ongoing investment in disaster information infrastructure."

In my opinion, the NHK subscription fee paid by my family is a kind of insurance premium, and in Japan, a disaster-prone country, I believe it is well "paid for."

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I think a Germanium radio could be commercialized and sold, but I have not found one.

(There are kits for children's science, but I can't find an adequately packaged product.)

Well, it is not going to be very profitable.

I would stick that radio following the fire alarm in the ceiling.

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Integrating NHK Radio 1 and 2 is a good idea, but the total conversion to an FM station should be well thought out.