Your Business Can Make A Difference! If you would like to become a Business Underwriter and introduce your Business to the Tampa Bay area, contact Elle at 813-289-8040 ext 239. Our Business Underwriters listed below are a big part of our Spirit FM Family and are making a difference in the Ministry here at Spirit FM! Since we are fully "listener supported" we rely on on financial donations from businesses and in turn provide them with an ON- AIR business announcement. If you're looking for a product or service, please consider patronizing the businesses that support Spirit FM! Listing of Spirit FM underwriters. WBVM 90.5 FM Inc. does not discriminate in its underwriting agreements on the basis of race or ethnicity as set forth by the Federal Communications Commission.