Info about 1970's broadcast "look"?

[Mr D]

Hi folks,

I'm just getting into this as a hobby!

Could you please take a look at the youtube video linked below.

https://www.facebook.com/watch/?v=1833581946745914
(note and edit some months later: Unfortunately the original video has been deleted, so i've changed the link to another version on Facebook).

Can anyone tell me what cameras are being used?

How is the "green screen" effect achieved? I don't see any green screen in the long range shots. Perhaps some other technique?

Any other comments or observations about the gear and techniques used to create this "look"?

BTW, i appreciate that when this film was shot, they probably weren't going for a "look", it was probably just the best quality they could achieve, it's only with hindsight that we can appreciate it as a "look"!

Thanks in advance!