AHC:Pneumatic post and electric telegraph appearing together

Do pneumatic post networks strike anyone here as being built after electrical telegraphy had become established?
These systems did depend on the use of the technology behind the electrical telegraph so that the sender can tell the receiver that something is on its way and the receiver can tell the sender when it is received. But there seems to be no reason why it could not have appeared before, say, the Morse telegraph was established.
 

Dolan

Banned
Is that basically a large network of pressurized air cannons?

It could work in one building, but in long distance setting, it either can't work, or the pressure required would reach extremely dangerous level to just push the tube, to the point that the thing could kill human.
 
It did work across cities; they were not cannons, they were tubes and metal cylinders were pushed through it by the movement of air through a pipe.

Could manual telegraph equipment have been used only to transmit particular types of information pertaining to more limited fields of activity?
 
Except that the telephone (in our timeline) was actually invented a bit before the phonograph. In fact, the inventor of the phonograph did experiment with a disc for recording telegraph code. If you think about Morse Code, it is a method to encode every letter of the alphabet and all the numerals we use, and therefore recreate a full script, which in turn can do everything that the spoken language can do. Even a love poem can be transmitted over a telegraph line using morse code.
Partial telegraph codes have also existed, used for telegraph communication between railway signal-boxes, more on this page.
The idea is this, could the pneumatic post appearing at the same time as the telegraph at least delayed the devising of a full code given that the pneumatic post would be a way to send any messages that could not be sent with a partial code?
 
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