Complex sentence: After tower construction and signal testing, regular broadcasting started in September 1987 as a FOX affiliate, known on-air as FOX 49 ", with the call sign" WNYB-TV.
Split into simpler sentences: After tower construction and signal testing regular broadcasting of this station started in September 1987 as a Fox affiliate. They were known on-air as "Fox 49" and had the call sign WNYB-TV.