61 Pa. Code § 42.4
(a) A licensed commercial or educational station, other than those which qualify under the provisions of § 42.5 (relating to nonprofit educational stations) may claim an exemption upon its purchase, rental or repair of property set forth under the provisions of § 42.3 (relating to property) together with other items of property which qualify for exemption under the provisions of § 42.2 (relating to exemptions). At the time of making a claim of its exemption, the purchaser shall tender to its supplier a properly executed blanket exemption certificate reflecting the following language on the face thereof: ‘‘Purchaser is a licensed commercial or educational station, call letters
, purchasing exempt property or services for direct use in broadcasting.’’
The provisions of this § 42.4 adopted May 24, 1974, effective May 25, 1974, 4 Pa.B. 1032.