Stalker: Call of Pripyat → Quests → Recon Drone (Notes of a Strelok)
In the far northwest of Jupiter's environs, you can find a crashed reconnaissance module, from which you can retrieve a black box containing Strelok's recordings. But reading them won't be easy; you'll need to take the box to Azot on Yanov; that's the only way to make the information legible.
Well, let's take it. Azot will ask us for money for repairs, and we agree. If you want a discount, it's only 1,000 rubles. You can come back for the module a couple of hours after you give it to Azot.
Next, you'll see Strelok's caches marked on your map. But I won't tell you how to unlock them. That's what they're caches for.
Source: gamer.ru
See also:
How to defeat Skeletron (guide)
Fallout Tactics: Armor (parameters)
Glycerin and its chemical properties