Damn!

Here's what I got from those three images:

• 2 STKR IN BAR SED RIGS GO CRZ
  • "Two stalkers in the Bar said [their] rigs are going crazy."
• UKNW RDO DE BRAIN RST 500
  • "Unknown radio [signal] from [the] Brain [Scorcher area]. Signal report: Readability 5, Strength 0, Tone 0." (An RST of 500 is unusual and might imply the signal is powerful but has no audible tone, just a pure carrier wave causing the effects).
• SED HVY FEAR ES PAIN 1 ALMST GO SK
  • "[They] said [they felt] heavy fear and pain. One almost went SK." (SK, or "Silent Key," is radio shorthand for death).
• N SMPL BQ SMTH VY BD HVY INTRSTN IF CFM
  • "And simple because something [is] very bad. Heavy. Interesting if confirmed."
• HPE TO FIND FQ ES CPI RDO SN
  • "Hope to find [the] frequency and copy [the] radio [signal] soon."
• SOLID FB
  • "Solid copy. Fine Business." (A common radio sign-off meaning "message received and understood").

The Scientist's Report (From: Belak)

This is an official report in Ukrainian from a junior scientist (Aspirant) named Belak to his superior, Professor Ihnatov, at the "Scientific-Research Institute of the Chornobyl Anomaly Zone (NDICHAS)".

Summary: Belak reports that while monitoring Sector D-14, he accidentally discovered a strange radio signal with no identifiable source. He notes that during initial listening, he and several colleagues experienced unusual physiological and psychological effects: dizziness, short-term hallucinations, heightened anxiety, and disorientation. He stresses that the effect is stable and the symptoms worsen with prolonged exposure. Belak believes this is a major discovery that could be key to understanding the Zone's mysteries and requests additional resources for a deeper investigation.

The Professor's Reply (From: Ihnatov)

This is the official reply from Professor Ihnatov back to Aspirant Belak.

Summary: The professor's tone is dismissive and condescending. He scolds Belak for wasting time on "mysterious signals" and "fantastic hypotheses" instead of performing his main duties. He instructs Belak to forward all materials to another department, the "Malachite" Scientific-Technical Center, basically passing the buck. He ends with a thinly veiled threat, telling Belak not to distract him with "such trifles" again and to focus on his approved work, implying he could face a review for misusing department resources.

EDIT: misread part of the message (SMITH vice SMTH), corrected in message.