WHARF Cable has been slapped with a $10,000 fine by the Broadcasting Authority for repeatedly allowing advertisements to go to air. The authority said it drew the line yesterday and imposed the fine after the cable television operator breached advertising conditions for the fourth time in six months by recently allowing two commercials to be screened. Its licence prohibits the broadcasting of advertisements. Wharf spokesman, Max Ho Man-wang, said he was unsure which incident the authority was referring to but added it might be related to problems the broadcaster has had in accidentally allowing advertisements from feeding networks to go to air. He said most networks provide a Q-tone during live feeds which warn engineers of an upcoming advertisement so it can be edited out and re-inserted with other footage.