At one point, if your DTV coupons had expired you were out of luck. Now the government is allowing households to reapply for a new DTV converter box coupon if their original converter box coupon expired. The deadline for applying for all converter box coupons is July 31, 2009. Each converter box coupon entitles you to $40 off a digital television converter box. The conversion happened on July 12, 2009 and some have been going without a television signal since then. You have just a few day apply for a converter box coupon.