The primary limitation to the frequencies used by cell phones is that they are line of sight, power isn’t really as relevant. A 25,000+ foot elevation difference between phones and towers allows for some pretty awesome line of sight.

I've never used an actual Espresso machine. I figured out how to use a mocha pot but for me, I use a drip machine that actually produces pour over coffee...or a french press...or a perculator...or sometimes even cowboy style.

Depends on where in the world you are. Americano is actually espresso topped with hot water but in the Americas (specifically the Spanish speaking parts) cafe Americano is standard drip coffee as that's a direct translation for American coffee.

Until you are in central/south America and parts of the Caribbean. Then drip is cafe Americano (as that's what translates to American coffee in Spanish).