The early limits on television picture quality

[ppppenguin]

Paul Marshall and I have been doing some research on the 1V/75R question. I've got a yawning gap between 1936 and 1952 but he's turned up possible evidence that RCA were using 1V as early as 1940. Pretty definite by 1946. Using 75R hit a sweet spot in low co-ax cable losses. 50R is better for high power but worse for losses.