One bond, with a face value of 1000 dollars and annual coupons at a rate of 8.3 percent effective, has a price of 1066.69 dollars. A second bond, with a face value of 1000 dollars and annual coupons at a rate of 6.1 percent effective, has a price of 948.37 dollars. Both bonds are redeemable at par in the same number of years, and have the same yield rate. Find the yield rate. (Give your answer as an effective rate.)