[GreenKeys] How were teletypes connected across long distances?

[Dave Horsfall]

On Fri, 24 Nov 2023, Chuck Robertson wrote:

> Probably dumb question:

There is no such thing as a dumb question; only dumb answers :-)

> If they didn’t have modems or routers, and the machines send and receive 
> only by 110v current, does that mean there were dedicated wires across 
> long distances between cities, carrying electrical pulses between 
> sending machines and receiving machines?

Isn't the "R" in RTTY "radio"?

-- Dave (vk2kfu)