[GreenKeys] Where was the "Telegraph" in AT&T?

[Richard Knoppow]

    You may be thinking of the lines leased by PT&T to Federal Telegraph 
and Radio during WW-1  Federal had a small but very successful radio 
telegraph service along the pacific coast. When all wireless stations 
were taken over by the U.S. government during WW-1 Federal continued the 
service via wire lines leased from Pacific Telephone and Telegraph. 
Federal eventually got out of the telegraph business. Their claim to 
fame was that they sold 15 words for the same price as WU sold 10 words.
     Federals main importance was in developing and perfecting the 
Poulsen arc. They equipped the U.S. Navy's international wireless 
network with these arc transmitters, which were continuous wave and 
replaced the damped wave spark units previously used. Federal later 
became a part of ITT.

On 2/2/2025 8:37 PM, Jim Haynes wrote:
> I think it was Pacific Telephone where you could actually send
> telegrams.  But there was telegraph business outside of sending
> telegrams.  Bell companies could have provided telegraph
> transmission sevice over their wires as a private line offering.
> 
> Especially with open wire pole lines, a "composite set" is a set of
> low-pass and high-pass filters that allow sending telegraph signals
> and voice over a wire pair.  And then there are other services that
> can be considered telegraph - consider burglar alarm wires between
> the customer premises and the alarm company that monitors the situation.
> One such company is American District Telegraph.
> 
>      ---
> 
>      "Ya can argue all ya wanna, but it's dif'rent than it was."
>      "No it ain't! No it ain't!  But ya gotta know the territory."
>          Meredith Willson, The Music Man
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-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998