"Griff" wrote


However, I am a bit puzzled by his summing-up quote for this chapter:
"Regardless of the thickness of the wires and the high levels of
voltage, telegraph wires simply couldn't be continued indefinitely".
Now I would have thought the restriction was *exactly* due to the
limitations on wire thickness and voltage (ie the practical problems
with manufacturing telegraph cables and voltaic cells at that time).
Or am I doing Mr.Petzold an injustice, when perhaps there was some
other limiting factor ?

Probably due to the cumulative C and L of a long wire eventually shaping
the waveform so that rise and fall profiles are smeared.

73, de Hans, K0HB