Signedplate on base: WM.J. MURDOCK CO. / CHELSEA, MASS.
FunctionThe frequency of transmission or reception of a radio circuit is inversely proportional to the square root of both its capacitance and inductance. Tuning coils are one of the methods used to alter a circuit's frequency, by altering the circuit's inductance.
This coil was most likely used in accordance with either radio transmittance or radio reception.
Historical AttributesCruft
ProvenanceFrom the Cruft Laboratory, Harvard University.