[thegeek]

Yes but technically that's the Royal Christmas Message, which makes it gender neutral (though i suspect that's been sort of lost due to the length of the reign of The Queen).

The first TV pre-recorded message was 1959.  The monarch used to do these live (apart from George VI's last one which he did record in advance).

Yes it's never called the Queens/Kings Speech - that is the name given to the one he/she makes to open Parliament. 

It's either the Christmas message or more commonly in the schedules as just 'The Queen' or 'The King' 

Going back to it being a radio broadcast, until fairly recently the radio version went out at 11am and the TV at 3pm. I think it was only when it got shared between BBC and ITN that it became simulcast. I think there's still a different radio version for obvious reasons

I just picked a random year in BBC Genome to see, and in 1991, Radio 4 broadcast what the Radio Times billed as "The Queen's Speech" at 9am. It stayed there until 1998, when it had a year at 4pm, and it's been at 3pm since. (Not a strict TV simulcast - I believe the radio edit is slightly different.)