Diana Stones, 20, turns the key prior to selecting the desired channel on a TV set equipped with the new Marconi PayVision system in a London demonstration. The unit, a small box no larger than the average book, plugs into the aerial socket of any standard TV set and push-buttons select various PayVision channels. It costs only 5 to instal and average cost of programmes is 2/6d, with some public service and educational prgrammes free of charge. A central billing exchange automatically registers all programmes viewed. PayVision uses a closed circuit distribution system to bring three new TV channels into the home. The unit can be used with existing sets and does not affect present programme reception.

Diana Stones, 20, turns the key prior to selecting the desired channel on a TV set equipped with the new Marconi PayVision system in a London demonstration. The unit, a small box no larger than the average book, plugs into the aerial socket of any standard TV set and push-buttons select various PayVision channels. It costs only 5 to instal and average cost of programmes is 2/6d, with some public service and educational prgrammes free of charge. A central billing exchange automatically registers all programmes viewed. PayVision uses a closed circuit distribution system to bring three new TV channels into the home. The unit can be used with existing sets and does not affect present programme reception.