Evening star., 1924-04-30
RADIO RECORD MADE
WITH COOLIDGE TALK
Number of Broadcasting StationsI
Handling Speech Simultaneous
ly Largest to Date.
6,793 MILES OF WIRE USED
Heard in Texas Sooner Than in
Back Of Ballroom.

Radio listeners throughout the east
ern part of the United States who had
the opportunity TO hear the address of
the President of the United States,
April -. at the annual meeting of the
Associated Press in New York, through
tho numerous broadca sting stations
connected by wire telephone lines, may
be Interested to know that this occa-
sion established Il world record in the
number of broadcasting stations which
handled the same program stimuli
taneously through the aid of telephone
lines
Eleven stations. including WEAF.
New York WCAP, Washington;
WAR, Providence; WIT, Philadelphia; ;
WNAC, Boston: WCAE, Pittsburgh; ;
WMAQ. Chicago: WWJ. Detroit: KSD.
ST. Louis; NDAF. Kansas city: WBAP,
Dallas, formed the links cf the great
broadcasting chain which made the
remarks Of the President audible to a
huge audience which probably num-
bered far into the millions.
Vast Area Covered.
There were 6.733 miles Of telephone
lines used, all of which were carefully
balanced and euudliZed 50 that true
naturalneSS OF speech would bC sue
ceSSfully transmitted TO the huge radio
audience. Forty-two reYctters and
special amDlitierS we're in operation at
twenty-One repeater points .scattered
from Massachusetts to Virginia and
from Texas 10 Missouri tiftY-tiVe
engineers We're detailed to the work Of
handling these rcnCaterS and amp!ilierS
during actual operation.
The control input miCrophonc was
installed on the speakers table at
the Waldorf AStoria. New York. the
output of which was ampliied through
a speech iHput equipment located
nearby. At the hotel special tele-
phone circuit carried the amplitied
output TO the Walker street building
of the telephone company. where all
the long-diStance lines terminate. At
this point also a line conducted the
amplitfed speech current to station
WEAF at i63 West street, making
the Presidents speech available to
listeners in the metropolitan area.
Transmitted to ID. c.
\ line from WEAF furnished sta
ton WCAP. the Chesapeake and Po-
tomac Telephone Company. with the
speech. and another reached to Phila
delphia, where WFI. Strawbridge 4
Clothier. broadcast through their sta
tton. kepeaters at Princeton and
Philadelphia maintained the correct
Reaching from New York also was
the regular line t. Chicago. with its
repeater stations at Harrisburg,
Brusht"n Cnear III 'sburghl. Beaver
Dam. Ohio, and Nc 'r"ll Park (near
ChiCagol.
At Brushton special line fur
nished station WCAE. Kaufman d
Baer, Pittsburgh and a branch reach
ing north from Beaver Dam supplied
station WNJ, the Detroit News, De-
troit Another long line from Chi
cagu to Kansas City via Burlington
gave the presidential program to sta
tion WDAF, the Kansas City Star,
continuing southwark through New
ton, Wichita, oklahoma City, Dallas
and Fort Worth. The radio audience
in the south central part of the
United States heard the program
through station WBAP, which was
operated jointly for the occasion by
the Fort Worth Star-Telegram and
the Dallas News.
RcIayed at ST. Louis.
At St Louis station KSD. the st.
Louis Post-Dispatch, broadcast the
speech in that area, being furnished
through special circuits from Chicago
with repeaterS at. Blooming ton, Ill
WAR, the Outlet Company, IN row
dence was furnished through WEAF
in the usual way. while WNAC, the
Shepard Stores. Boston, secured the
program through direct wires in New
York with its special repeater at
Boston.
>
stations has never been attempted
previously, a program has been broad
east over a wider area when station
PWX. Havana; WCAP. Washington;
WEAF, New York; WAR, ProVl-
dence: WMAQ, Chicago; XIX, Oak
land, and kPO, San Francisco, broad
cast the address by Gen. j. J. Carty
before the Bond Club of Chicago
last February. TWenty-siH repeater
stations were utilized on this, occa-
ion and program matter was broad
cast by various stations picked up
at points all the way from Havana
to San Francisco.
Duplicate Lines Ready.
On both the transcontinental dem
onstration and the broadcasting of
the Presidents speech alternative
circuits were provided, so should any
emergency arise the speech could be
routed through another set of lines
without interruption of the broad
casting.
1t is interesting to note that be-
cause electric currents travel 1S6,O0O
miles per second the remarks of the
President We're available to the radio
audience in Texas sooner than to the
listeners in the back hall Of the pail
room at which the President spoke
in New York Sound waves travel
at approximately 1,140 feet per sec
ond While the sound wave which
President Coolidge set up was travel
ing goo feet to the back of the hotel
a. radio wave Travelled with sufficient
speed to cover a distance of $1,000