A bit of light relief here.
British Eagle (second biggest local carrier after BEA/BA) had a fleet of Viscounts. When a 12" dish was developed, they opted for those. The trouble was they had been the only ones to own the old jig for building a pressurized bulkhead for a raydome. They'd sold it for something like 14k quid. When they got Marshalls ???? to do the work, they cost about that each to do the job. They kind of worked.
When we got the first (all green) digitals, we thought we were in the modern world. Little blocks of square pixels used to flash if the return was too great.
Into the flightdeck comes the head opps bloke. Look at that! I'd say. That little flashing rectangle is Buckingham palace. This one, Westminster. When they flash, it means the Queen's in residence.