RCW 84.36.047: Nonprofit organization property used for transmission or reception of radio or television signals originally broadcast by governmental agencies.

The following property shall be exempt from taxation:

Real and personal property owned by or leased to any nonprofit corporation or association and, except as provided in RCW 84.36.805, used exclusively to rebroadcast, amplify, or otherwise facilitate the transmission and/or reception of radio and/or television signals originally broadcast by foreign or domestic governmental agencies for reception by the general public: PROVIDED, That in the event such property is leased, the benefit of the exemption shall inure to the user.