95. Every person using may equipment prohibited in paragraph a of section 18 or the regulations is guilty of an offence and liable, in addition to payment of the costs, for a first offence to a fine of not less than $100 nor more than $300 or imprisonment for not more than three months, or both penalties together, and, for any subsequent offence within two years, to a fine of not less than $500 nor more than $1 000 or imprisonment for not more than six months.