Sorry folks, I'm also stuck on 5d, Quarters past empty holds,(4 letters I've got S?N?) and 10a, Point-to-point broadcast (4 letters, possible ?E?D) thanks
I think that for 5d I put OWNS. empty =O then W,N,S are quarters.
10across I put Sewn for broadcast as in seeds.
I hope that this helps as I have sent mine in and I am working on memory