3D Momentary loss of signal - D?o?o?t
30A Touring entertainment - R?a?s?o?
34A Regularity of shape about an axis - Radial S?n?e?r?y
32D Send, broadcast - D???s???
37D Early in developing - ?r???c?o?s
36D Most important details - ??t?l ???t?y
46D Tree lined promenade - ????e?a