Name used from August 1, 1947 to March 6, 1953, and then again from December 20, 1956 to August 31, 1968. In between Wielka Orkiestra Symfoniczna Polskiego Radia W Stalinogrodzie was used, that was because Katowice was temporarily renamed to Stalingród.
Name changes:
1935 - July 31, 1947: Orkiestra Symfoniczna Polskiego Radia (Polish Radio Symphony Orchestra)
August 1, 1947: Wielka Orkiestra Symfoniczna Polskiego Radia, or WOSPR (Polish Radio Grand Symphony Orchestra)
March 7, 1953: Wielka Orkiestra Symfoniczna Polskiego Radia W Stalinogrodzie (Polish Radio Grand Symphony Orchestra in Stalinogród)
December 20, 1956: Wielka Orkiestra Symfoniczna Polskiego Radia, or WOSPR (Grand Symphony Orchestra of Polish Radio)
September 1, 1968: Wielka Orkiestra Symfoniczna Polskiego Radia I Telewizji, or WOSPRiTV (Grand Symphony Orchestra of Polish Radio and Television)
January 1, 1994: Wielka Orkiestra Symfoniczna Polskiego Radia W Katowicach, or WOSPR (Grand Symphony Orchestra of Polish Radio in Katowice)
February 1, 1999: Narodowa Orkiestra Symfoniczna Polskiego Radia, or NOSPR (Polish National Radio Symphony Orchestra)
If you're unsure which profile to choose, please use Polish National Radio Symphony Orchestra.
Directors:
Witold Rowicki from May 1, 1946
Grzegorz Fitelberg from August 1, 1947
Jan Krenz from August 1, 1953
Bohdan Wodiczko from February 1, 1968