Note
QST, Nov 1935, p. 84.
Harvey Radio Labs of Brookline, Massachusetts produced the 60-T transmitter in 1935. Output from the RK-20 final was 50 watts CW, 15 watts grid-modulated AM. The transmitter pictured is a model A, which covered 160, 80, and 40 meters. The B model covered 80, 40, and 20.
References
Brief description. Radio News, Aug 1936, p. 87.
60T