The administration and enforcement of this chapter shall be entrusted to and imposed upon a radio inspector. Upon receipt of a complaint that electrical interference with radio reception in violation of this chapter is being produced, or apparently being produced, on certain premises, the radio inspector or any of his authorized deputies shall promptly enter upon such premises for the purpose of inspecting and testing the installation and working of any or all apparatus coming within the terms of this chapter, and it is unlawful for any person to interfere with the radio inspector or any of his deputies in making such inspection, or to refuse to permit the radio inspector or deputies to enter the premises at any reasonable hour for such purposes. The radio inspector or his deputies, before entering any premises, shall exhibit to any person there in charge, authority as an inspector.