Stereo versions of the WAV picture files with Picture on the Left channel & Synchronous 12½ Hz Squarewave on the Right.
Add the Right channel audio to the motor drive voltage to synchronise the motor and get a steady picture! Right Click and
"Save Link As..." to save to Hard Disk.

tcf1.gif

1.Central Strip of Test Card F including the centre circle

tcf2.gif

2.Close up of Carol Hersee in Test Card F

nbtv1.gif

3.The letters N B T V in a vertical column