Complex sentence: The call letters, were derived from William F Huffman Sr, who founded the station in November 1940, originally broadcasting with 250 watts, on 1340 kHz, until 1959, when the move to the current frequency took place, increasing daytime power to 5,000 watts.
Split into simpler sentences: The call letters were derived from William F Huffman Sr, who founded the station in November 1940. Originally broadcasting with 250 watts on 1340 kHz, until 1959, when the move to the current frequency took place, increasing daytime power to 5,000 watts.