2GK, 2XAB 1924 Schenectady, New York
Operators: P.R. Lynn, W. Galloway, C.N. Nebble 2XAB, A.G. Kastenmayer 2GK
A.D.M. Eastern N.Y. The callsign suffix starting with an "X" was owned by a business!
From the estate of G5BV Courtesy of G3NDC