The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1911-05-27
Postal TeIegraph-C Cable Com
pany Instails a Most In
geniOus Device.
TALK AND TELEGRAPH
OVER THE SAME WIRE
Conversation Easily Carried on
While Mechanical Messages
Are Sent.

The Postal Telegraph Cable company
| yesterday completed the successful in
stallation of n composite telephone circuit
| between Salt Lake and Reno, New. a
distance OF 5Ia miles. establishing direct
| telephone communication between the
| two cities. making possiblo the speedy
perfection of a similar direct line of In
| tercourse between this city and San
Francisco and nausurating initial steps
in telephone development that may
revoutonize the present system of long
distance correspondence by telegraph.
All day yesterday V. V. Stevenson,
chief electrical engineer of the Pacific
division Of the company with hcadquar-
ters at San Francisco. was In touch with
NJ. Robinson. manager of the local office,
and c, f, Bunnell, chief operator. These
men corversed freely by telephone be-
tween Reno and Salt Lake over two of
the company's duplex telegraph circuits,
one being the San Francisco Chicago line
and the other that used between San
Francisco and New York.
While the telephone conversation was
going on dispatches were being sent over
the same wires to and from Chicago and
New York and San Francisco, without
the slightest interference TO any of the
senders or conversants During the
evening, while an electrical storm pre-
through which the lines pass. a Tribune
representative talked with Homer Mooney
OF the Nevada Journal. Every word came
clear and distinct over the long wire.
as though the TWO parties were con-
versing over the wires OF the local tele
phone system, and all during the con-
versation important messages were be-
ing exchanged over the Identical wires
between San Francisco and Chicago and
New York.
Talks to Frisco.
Early in the day Mr.. Robinson was
able TO reach San Francisco over the
same system, but. conversation could not
be successfully maintained owing TO i'm
perfect connections al Reno MIR. Bun
nell was able 10 get in touch with the
coast city also. although he was unable
to distinctly hear the answer. tele
gram later advised that every word he
had spoken was clearly received by the
San Francisco operator. whose answer
failed TO reach the Salt Lake man.
Mr.. Stevenson, however, completed the
installation OF a Reno-San Francisco CTR
suit and was enabled TO converse as free
ly between these two cities as between
Reno and Salt Lake. Over the new cir
cult of communication he asserted last
night that as soon as the connections at
Reno could be perfected, which would
probably be within few days, direct
telephonic communication between Salt
Lake and the coast metropolis would be
successfully established over one OF the
longest, II not the longest telephone cir
apparatus. the distance being nearly 500
miles
The telephone circuit works direct to
Reno on the Two telegraph circuits with
repeating the telegraph circuits at Reno
has been eliminated By the use of heavy
500 pound copper wire per mile which
is transposed each mile through the high
est grade Of construction engineering. In
many places the construction runs TO
ninety poles every mile.
Same Wire Is Used.
While conversation was being carried
on last evening between this city and
Keno. another operator at Reno was con-
versing with a third operator at San
Francisco. the same duplex circuit being
used by ali parties, without the slightest
hindrance, each discourse being made dis
tinctly separate. While this double tele-
phonlc conversation was going on over
the same circuit. four telegraph mes
sages were being exchanged over the
wires ;lso. two between San Francisco
and New York and two between Chicago
and San Francisco.
A telephone system on the same order
has been established over a way tee-
graph wire between Reno and Salt Lake
whereby the local chief operator is en-
abled To keep in direct touch al any point
with lneDen who may be out on repair
work, Each linenan carries an individ-
any point on the telegraph line without
interfering in any way with the tcle-
graph signals.
Statement by Stevenson
Over the new system Dr. Stevenson
last nigh, made the following statement:
Tine Postal Telegraph Gable company
has tonight realized months Of hard
work and experimental labor by estab-
fishing successfully a simultaneous tele-
phone and telegraph service between
Reno and Salt Lake and between Reno
and San Francisco. This service has
also been found possible between San
Francisco and Salt Lake. probably the
longest distance row connected without
intermediate apparatus.
Although We have demonstrated the
feasibility and practibility OF the Salt
Lake-San Francisco circuit. II has not
yet been perfected We expect to have
completed connections within few days.
when Salt Lakers will he able to con-
verse freely with their San Francisco
friends by telephone. the same as in their
own city. a reasonable rates.
"The company has already ordered
booths and appliances to establish per-
fected system of telephone <communica-
ton between Reno and Salt Lake. and
San Francisco and Salt Lake. AS soon
as the installation has been completed
which will probably be within a month
at the longest. this new developm ent In
telephone service will be turned over to