Your nickname and this postcard gave me idea what to write you.
I would like to talk about the radio.
Who is considered the inventor of the radio in your country?
It turns out that people in different countries thinking differently.
For example, on the territory of the former Soviet Union that's A.Popov.
Now about the main thing, why on the postcard a lighthouse.
It's simply, the most recognizable radio station in Russia is named "Mayak" (in translate lighthouse).
This radio exists since 1964.
And their musical screensaver known a lot of people.
It's the sound of my childhood, only imagine it: https://www.youtube.com/watch?v=g_DInNqh-Tg every hour!
But now, at homes sound of the radio is seldom, people prefer listened music and watched TV...