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Broadcasting Church Services
So, as the situation now stands in Calvary Church, there are eight microphones placed about the church. The chimes, the pulpit, the chancel, the organ, each has a microphone, while the others are placed advantageously above the choir. These microphones were tried in more than a hundred and fifty different places in the church before the results were entirely satisfactory.
though now in operation more than a year, has never been more than a week old at any time. This is due to the fact that constant changes are made in the broadcasting apparatus. The KDKA of December 23, 1920 and the KDKA of May 3, 1922, which was heard in Iquique, Chile, 4200 miles away, are two very different stations.
With the improvement in their broadcasting,
The microphone in the pulpit of Calvary Church, Pittsburgh, Pa. Note its location and the felt padding used to guard it against vibration
All these microphones lead to a switch box which also contains tube amplifiers. An operator sits up with the choir and throws the switches for the different microphones. When the choir sings, a switch connected to the microphones in the choir loft is thrown so that these particular microphones are open. When the minister speaks, the microphone in the pulpit is thrown open. When the chimes are played the switch for them is thrown.
As a matter of fact, experimenting is still going on to perfect the telephone line system in order to get the voices to the broadcasting station as clearly as possible.
Remember that, in addition to experimenting with the mocrophone system at the church, tests were being continually made from the station. The equipment was changed almost as much as the microphones, for KDKA, al
increasing interest was manifest in the chUrch services. Letters began to stream in every Sunday from every part of the country and from all classes and conditions of people. The old lady in Maine enjoyed the sermons as much as the lady in Pittsburgh who was ill and in bed. In fact, popular sentiment seemed to be decidedly in favor of the church services being broadcasted.
After a few months of broadcasting from Calvary Church, an event happened which seemed to open the columns of all the newspapers to radio. The Herron Avenue Presbyterian Church lost its pastor, and one of the trustees, himself interested in radio, suggested the idea of installing a loud speaker and loop antenna in the church to receive the services from Calvary. This was done, and, after a few tests which were pronounced satisfactory,