[3] Kim Il Sung remembers her as one of the best radio operators in his autobiography With the Century,[6] writing: Unable as she was to take a bit of the food served at the mess hall, Pak Kyong Suk was never absent from training in wireless communication.

She was so active in both her studies and exercises that the instructor of the wireless platoon spoke highly of Korean women, noting that they were indeed hard-working and persistent.

Pak Kyong Suk once accompanied Kim Chaek to the enemy-held area, carrying wireless equipment on her back, and engaging in small-unit activities for several months.

[7] Her political career began in c. 1948 when she became the director of the secret documents department of the Central Committee of the Workers' Party of Korea (WPK).

In July 1956, she became a deputy department director in the WPK South Hamhyong provincial committee.