Show i n r I R RADIO IO DEVICE DESIGNED DESiGNED FOR SPECIAL USES A A radio device for reproducing without without with with- out distortion al signals als and voices for large audiences la is being sold The de device device device de- de vice which Is known as a Carries Carries' two windings which actuate a solenoid attached to tho the center of the tho diaphragm at nt a a. depending upon the frequency of the incoming radio radio ra ra- dio signals One of ot these windings Is 18 connected to a local power source while the other la is connected to the output output output out out- put circuit of the radio circuit The changing of ot the magnetic field causes the plunger to vibrate and this vibration vibration tion taken up by the diaphragm produces pro pro- duces sound By a a. reversal of cess It Is possible to use this new devIce device de de- de- de vice as a a. microphone In this case It functions in the circuit and and controls the tte e voice or orr other vibrations which eventually event event- eVen find themselves flowing into the tiie ether or along the wire line Une depending on whether the unit Is ie used for far wireless wire wW- less telephony pr ordinary ordinal telephony When the is used as a trans transmitter mitter it is not necessary to be as close to to- it as is the case with the ordinary ry carbon Carbon- granule microphone v For e transmission of ot music from fr froman m man an orchestra it ft is s therefore not necessarY sarY sary to have Jave a horn attached to to ir H It w which would tend to cause distortion even at the transmitting end of ot the line |