Reply To: 9B

[RickOShea]

@pi_enthusiast That’s a good question.

I don’t know the answer, but from what I have read, it seems unlikely that a six needle telegraph would have been deployed, between distant sites, given the difficulty and expense of installing and maintaining the multi-wire conductors between the terminals. I don’t know, but guess protypes may have been built and tested in a workshop environment, but it sounds unlikely they would ever have been deployed.

The following web site provides excellent background:

Distant Writing