Book recommendation?
 

First, thanks to everyone for the help you've given me so far.
I still have a number of things which I either don't understand or only dimly so, so could anyone recommend a textbook on television technology of the 30's/40's written for a generally-educated but non-specialized reader like me? I have a copy of Bernard Grob's Basic Television, and most of my understanding of the subject comes from it, but it doesn't cover things like why signal interference occurred at a much greater distance then had been believed, or the gradual improvement in Iconoscope sensitivity through the late 1930's, or how often component failure at the transmitter or the studio led to the loss of signal. And so on.