. Bell telephone magazine . as builtto provide a full-scale field trial of radiorelay as a part of the Bell System com-munications network. When developmentis completed, it is expected to furnish inter-city facilities for long distance telephony,television transmission, and other to supplement wire or cable linesbetween cities, the system is another stepforward in the Bell Systems continuingeffort to increase the flexibility and effi-ciency of its over-all network. The two terminal points of the radiorelay system are the headquarters buildingof the A. T. & T. Companys Long Li
. Bell telephone magazine . as builtto provide a full-scale field trial of radiorelay as a part of the Bell System com-munications network. When developmentis completed, it is expected to furnish inter-city facilities for long distance telephony,television transmission, and other to supplement wire or cable linesbetween cities, the system is another stepforward in the Bell Systems continuingeffort to increase the flexibility and effi-ciency of its over-all network. The two terminal points of the radiorelay system are the headquarters buildingof the A. T. & T. Companys Long LinesDepartment at 32 Avenue of the Americasin New York and, at Boston, the BowdoinSquare building of the New England Tele-phone and Telegraph Company. Between terminal points, the micro-wavebeam makes eight jumps via seven inter-mediate radio relay stations spaced aboutthirty miles apart. To provide the un-obstructed view between antennas neces-sary in micro-wave transmission, the sta- 2o6 Bell Telephone Magazi7ie WINTER. One of the seven intermediate hilltop stations along theroute of the Bell Systems new radio relay system betweenNew York and Boston. Electro-magnetic lenses in thefour horns atop the buildings receive and transmit longdistance communications between the two cities. Thisis the station on Jackie Jones Mountain, near Haver-straw, N. Y. tions are built on hilltops: Jackie JonesMountain, five miles west of Haverstraw,N. Y.; Birch Hill, about three miles southof Pawling, N. Y.; Spindle Hill, five milesnorth of Waterbury, Conn.; John TomHill, at Glastonbury, Conn.; Bald Hill,five miles east of Stafford Springs, Conn.;Asnebumskit Mountain, five miles north-west of Worcester, Mass.; and Bear Hillat Waltham, Mass. On the roof of each radio relay stationare four antennas, two facing along theroute toward New York, two facing alongthe route toward Boston. This allows fortwo-way operation—with one antenna ofeach pair for transmitting, the other forreceiving. The antennas
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1922
