William J. Clarke, who provided the equipment used in this demonstration, assisted Guglielmo Marconi with some of his earliest work in the United States. In turn, Reverand Tyndall greatly influenced a Mount Vernon youngster, Irving Vermilya, who styled himself Amateur Number One.
New York World, May 20, 1901, page 12:

Tyndall demonstration

Rev.  Mr.  Tyndall  Used  the  Marconi  Apparatus  to  Ring  a  Bell  as  He  Preached.

    Wireless telegraphy was employed last night at the First Reformed Church, Mount Vernon, to illustrate a sermon. The Rev. C. H. Tyndall is the pastor. The church was crowded.
    Mr. Tyndall chose for his text, "Wireless Telegraphy and Its Spiritual Similitudes." The texts on which this discourse was founded were: "Blessed are your eyes, for they see, and your ears, for they hear," and, "If any man hath ears to hear, let him hear."
    Mr. Tyndall's sermon went to show how wonderfully God's power is manifested in electricity. After explaining that the wireless telegraphy instrument he handled was the property of Prof. William J. Clarke, who was present to assist in the demonstration, and that the system employed was known as the Marconi system, he raised the electric apparatus in his hands.
    It consisted of a box about twice the size of an ordinary cigar box, and attached to it was a pole about eight feet in length. From the bottom to the top of this pole a wire was suspended.
    Mr. Tyndall then began his sermon. As he walked about he touched a button on the top of the box at intervals. Each time the button was pressed the bells under a wire on the platform back of the pulpit rang clearly. The congregation marvelled at the demonstration and many were anxious to press the button themselves. This privilege was allowed them by the minister while he continued his discourse.