Spectra of both the (A) over tilde (0, 0, 0)-(X) over tildet(0, 1, 0) and (A) over tilde (0, 0, 0)-(X) over tilde (0, 0, 1) bands in the (A) over tilde-(X) over tilde band system of HCBr have been recorded and rotationally assigned. The HCBr radical was f