New Britain herald., 1924-04-21
f793 MILES OF WIRE
 ID GARRY SPEECH
fl Stations to Broadcast Pres.
 Coolidge Tomorrow

New York. April 21.--Nearly 1000 miles of the American Telephone and Telegraph company's land wires will be ,:sed tomorrow to broadcast by ra- dio President Coolidges speech at the luncheon Of The Associated Press at the Waldorf Astoria. The broadcasting will begin al l:45 p. m.
 Eleven nroadca sting stations east Of the Rock Mountains will be linked di- rcctly or indirectly with New York city in this most elaborate experiment ever made with a presidents message. The land wires. or Hong lines" over which the presidents voice will be carried from the Hotel Waldorf As toria to station WEA' will be tapped by lines running to other broadcasting stations On these lines there will be forty-two repeaters, such as are used in long distance telephony to com pepsate for weakness of current and to insure the carrying power of the voice over long distances. The repeat CTS and special ampliflers are installed at twenty one stations.
 Many Miles Of Wire
 The actual mileage of land wires 10 be used in the experiment is 6,793. The wires are being connected in cir cults which will be maintained for fu- ture broadcasting tests.
 There will be fifty-five engineers at work handling the repeaters and the special amplifiers at the twenty-one repeater stations. They will keep
  out actal operation,
 In routing the circuits the American Telephone and Telegraph company will set up microphone at the Wal dorf with amplifers near by. From the grand ballroom, the presidents voice will be transmitted by wire to the radio studio of the A, T. & r., le5 Broadway, and thence by wire to the high power transmitter at station WEAF. 24 Walker street.
 Others Tap in
 Before reaching wEAF, however. the wires will be tapped by station WCAP at Washington. D. C., and WIFI at Philadelphia, with repeaters at Princeton. N. J., and Philadelphia; by station wCAE. Pittsburgh. with re- peaters at Harrisburg. F.. and Brush- ton, and by station WMAo. Chicago, with additional repeaters at Beaver station WDAF will tap the landwires to Chicago with repeaters at Burling- ton and Newton.
 The circuit serving the territory farthest west will tap the long line at Newton. going thence to Wichita, Kan. to Oklahoma City, with special amplifier at that place; from oklaho- ma City to Dallas, Texas, with special amplifier at Dallas, and from Dallas to Fort Worth to state wBAP.
 The circuit serving St. Louis, station ksD. is made by tapping the line 10 Chicago. That circuit will he operated through repeaters at Bloomington, III.
 Station wwJ, Detroit Mich. will he tapped on from the Beaver Dam repeater station.
 Station WNAC; Boston, will be tap- ped on from New York city.
 Station WAR, Providence, R. T., will get the message through its regu- lar facilities which tap wEAF.
 Official of the American Telephone and Telegraph company announced they would operate the WEAF trans- hitter on a current of 1000 watts, sl- though 1t has a capacity of 5000. When operated up to that capacity WEAF may be heard by radio listeners throughout the United States with 1 great clesrnes, but it virtually drowns out other brosdcasting stations in this i territory.
 Station WIZ, atop Aeolian Hall, 1 West Firty-second street, between l Fifth and Sixth avenues, will broad. east the speeches at the luncheon of | The Associated Press