Around 1948 the transmitter room was added to the original KTRB building on Norwegian.
Looking down the hall of the office extension on the east-side of the building on Norwegian.
The newsroom delivery booth.
The transmitter room showing the speech rack and control rooms and the records room.  This photo taken in the 60's judging from Cal Purviance's appearance. 
(L) The speech rack and  (r) the 1,000 watts homebrew ham radio station upstairs.
One of the two control boards built for KTRB.
Leonard Anderson, (Cousin Andy) in front of KTRB's 10 KW GE transmitter.

< This was KMJ in Fresno homebrew 1 KW transmitter which they sold KTRB around 1942 when KTRB moved to the Norwegian Ave studios.  It was later replaced by a commercially made 5 KW GE transmitter after which it was designated as the station's backup transmitter.
Studio A at KTRB in the 60's.
Joe Rice works in the engineering  room upstairs KTRB.
Inside KTRB circa 1942 and 1964