Tickets for this Saturday's Harvard-Yale hockey game went on sale yesterday at the Ticket Office in the basement of Harvard Hall.

Undergraduates may exchange student coupon number one for one ticket to the 7:30 p.m. contest; there is a limit of two tickets per student Additional seats sell for $7 apiece.

While demand for tickets has been great, tickets are still available, a Ticket Office official said yesterday.

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Last Saturday's Harvard-Penn clash for the Ivy League football championship garnered an average T.V. rating of 0.5, according to Greg Harney, producer of the Ivy League Game of the Week on the PUblic Broadcasting System.

Harney added that the ratings for the game, which are tabulated every fifteen minutes, reached a high of 1.24--a four percent share of the audience--at 1.45 p.m.

While ratings for other games have been higher--the Harvard Columbia season opener reached a high of 2.3--Harney remains optimistic about the future of these telecasts.

"We're hopeful for next year," he said, but added, "we'll have to want until the end of this year before we make a decision on next year."

The nine-game series of broadcasts will end on Saturday when Yale meets Harvard at Soldiers Field, Harney said. The broadcast marks the third week in a row and the fourth-time this year that Harvard has been featured on the "Game of the Week."