to prevent or obstruct the transmission or delivery of any message;
(b)
to intercept or to acquaint himself with the contents of any message; or
(c)
to commit mischief,
damages, removes, tampers with or touches any installation or plant belonging to the Corporation or the contents of the installation or plant or interferes with the radio-communication service of the Corporation, shall be guilty of an offence and shall be liable on conviction to a fine not exceeding $5,000 or to imprisonment for a term not exceeding 3 years or to both.