Where's the sci fi part? It's a fantasy world with fantasy weapons and tons of fantasy monsters.
And a radio tower.
The berserkers are the classic fantasy part. The factions responsible for the scifi elements are the clerics and the Albs (the latter not being a joinable faction but the player character -Jax- is an infamous Alb general, the so called
Beast of Xacor, who crashes with his glider and is then expelled from the Albs faction for his failure, even though the crash wasn't his fault but the Albs got principles so you're out).
Anyway, the bad guys, i.e. the Albs, are actually a faction that split off from the clerics. The main difference is that, contrary to the Albs, the clerics do not consume Elex but only use it to power machinery like battle mechs.
The world of Magalan is split up into several distinct lands. The berserkers reside in Edan which we've seen in the this video and also in the recent German let's play videos.
The clerics are in Ignadon, close to the meteor's impact site, the Outlaws are in the desert of Tavar (think Mad Max) and the Albs are all the way up north in icy, snowy Xacor (Elex is a freezing cold substance and the Albs are the prime Elex consumers).
So, most of the scifi elements will be found in Ignadon and Xacor as well as the capital city of Abessa.
The berserker territory of Edan is a mix between classic medieval fantasy and traces of the old pre-impact world (which was similar to our real world in terms of technology) but the berserkers are kinda like tree hugging hippies and do not strive for technological advancement. They just extract the Elex from stuff they find on their travels and turn it into mana to have a way to defend themselves but that's about as far as they will go.
So that radio tower you saw must have been a leftover from the pre-impact civilization (about 160 years old). The real scifi stuff is in clerics and Albs territory.