I also learned about amateur radio this year for this reason, took the exam, applied for a call sign, and became a ham. This steampunk-like technological feel is really interesting!

In addition to voice communication, there are many other ways to play:

- Receiving photos directly from the International Space Station or satellites using SSTV (sound encoding and decoding)

- Seeing which planes are in the sky nearby (offline version of Flightradar24)

- Sending and receiving Bitcoin transactions without relying on the internet, like this guy @MolonLabeVC

The last point is also what I most want to achieve, but it’s also the reason I recently paused this hobby.

After limited hands-on experience, I found that (amateur) radio is very against privacy:

- Actively exposing geographic location (like the QTH in the video)

- Passively exposing location (others can use directional antennas)

- Exposing information at the transmission level (broadcasting, similar to online chat rooms, where identity authentication relies on announcing your call sign)

- According to regulations, all communication must be in plain text. This means that theoretically, no information is allowed to be encrypted.

Overall, amateur radio is still very interesting. Because I do agree with what the original poster said, when bandwidth is limited (for example, it takes several minutes to transmit an SSTV image), people are still very friendly.

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