. BSTJ 1: 2. November 1922: Application to Radio of Wire Transmission Engineering. (Espenschied, Lloyd) . The difference is simplya question of the transmission level at which the amplification isworked. Fig. 7 gives a view of the interior of one of these radio telephonestations of the American Telephone and Telegraph Company andWestern Electric Company. It is located at Deal Beach, New Jersey. 134 BELL SYSTEM TECHNICAL JOURNAL In the foreground is the switchboard for enabling the operator tocontrol the radio-wire circuit at the connecting point. In the back-ground are the transmitter units—fo
. BSTJ 1: 2. November 1922: Application to Radio of Wire Transmission Engineering. (Espenschied, Lloyd) . The difference is simplya question of the transmission level at which the amplification isworked. Fig. 7 gives a view of the interior of one of these radio telephonestations of the American Telephone and Telegraph Company andWestern Electric Company. It is located at Deal Beach, New Jersey. 134 BELL SYSTEM TECHNICAL JOURNAL In the foreground is the switchboard for enabling the operator tocontrol the radio-wire circuit at the connecting point. In the back-ground are the transmitter units—four of them. These, togetherwith the four antennas with which the station is equipped, multiplexthe ether, in effect, and permit four channels to be established to asmany distant stations. It is intended that three of these be tele-phone talking channels and the fourth a signaling or a reserve talkingchannel. The receiving station is located at another point. It isnot desired to describe this station in any detail but merely to illus-trate it as an example of a radio repeating station functioning to. Fig. 7 connect the wire system with ships at sea and capable of effectingsimultaneously three different connections. It is hoped that thisship-to-shore development may be itself the subject of an Institutepaper. Intermediate Repeaters The transcontinental line with radio extensions as shown in Fig. 6is a good illustration of the use of intermediate repeaters types 6i repeaters are represented, the straight wire telephone APPLICATION OP WIRE TRANSMISSION TO RADIO 135 repeaters and the shore radio stations which are in effect huge re-peaters relaying between the land line and the radio circuits. Because of the moderate attenuation obtaining in the wire trans-mission system, we can work with fairly long repeater spacings, about300 miles in this case, and with moderate amounts of power and yetkeep the transmission levels at the receiving end relatively much WIRE AND RADI
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnic, bookyear1922
