Broadcast Pioneers member Charlie Higgins, who sent us this photo, e-mailed: I'm not sure just what this is but I suspect it has something to do with selecting monitoring for the announcer. Photo dates from approx. 1937 and we do not have a clue what this thing did. Can someone help us? E-mail us if you have any information. We do know that this was in the WFIL Radio Studios in the Widener Building in Center City Philadelphia.
From the official archives of the Broadcast Pioneers of Philadelphia
Photo originally donated by Broadcast Pioneers member Charlie Higgins
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