> John Ross wrote: > > It ought to be pretty easy to tell the difference between > > "transcribed" programs that were made directly from the studio at KHJ > > (either live to the network or pre-recorded) and those that came back > > to KHJ through several thousand miles of AT&T network circuits > > equalized at 5 KC (this would have been before KHz were discovered).
Not necessarily. The main trunks of AT&T's broadcast line network were EQed out
to 10 K back in 1934 and to 15 K by the end of the 30s. Once you got off the
main trunks you did soon hit 5 K lines, but the network line quality in the
mid-30s till the mid-50s was quite good. Far better than the lines for TV
audio and post 1960 radio. The AT&T Long Lines Division published a detailed
booklet on their new lines in 1934 called "Broadcasting Network Service."