Professor Pirozhenko's records

 is upgrades data for technicians that appears in S.T.A.L.K.E.R.: Lost Alpha.

"Вот, собрал для тебя. Здесь мои чертежи и схемы, конспекты и в целом мои мысли по поводу систем обнаружения артефактов. Толковый механик сможет разобраться и сделать хороший апгрейд твоего детектора. Не благодари."

- PDA information

"Here, I collected this for you. These are my drawings and diagrams, abstracts and, in general, my thoughts on artifact detection systems. A good technician can understand it and make a good upgrade of your detector. No need to thank me."

- PDA information

Overview

 * Upgrades data in general allow technicians to perform certain upgrades on weapons, armor and detectors.
 * The  upgrade data enables the Powerful antennas upgrade for the Detector "Echo", Detector "Ocher", Detector "Bear" and Detector "Veles".
 * Upgrades data are unique, i.e. only one specimen each exists on the board.
 * Initial completion of The expedition (debrief with Professor Pirozhenko) appears to get the player this useful detector related upgrade info.