CBS NY also used Thomson cameras in the 1970's before
they changed over to the Hitachi's.I am not sure when
they phased out the Norelco cameras,but I believe it was
way before 1984.The Norelco's were considered obsolete
when compared to the Thomson cameras.The Norelco's
weighed 140 pounds and the Thomsons were much lighter
and easier to work with.It is possible that they could have
kept quite a few of the Norelco's as backups into the
early 80's,But I think the Thomsons were well in use
at that time.
Regards,
Swanson