This recollection from a cameraman who worked the 1953 coronation broadcast:
"Whilst 20 million viewers watched the transmission in black and white, 150 children and staff of the Hospital for Sick Children in Great Ormond Street watched part of the procession in colour. Pye of Cambridge were given permission to set up three colour cameras on the roof of the Foreign Office, and by using a portable transmitter beamed the signal to Ormond Street to display colour pictures on two 20" sets. Twenty years later it would be standard practice for major OBs to be in colour. and today it is common place to deploy 20 to 25 cameras just for one programme 'Match of the Day.'"
From this site:the current page
http://www.tech-ops.co.uk/page86.html Cha
I would sure like to see photos of the cameras and receivers.
-Steve D.