Note
QST, Mar 1941, p. 71.
Lafayette catalog number 87 (New York), p. 55.
Radio's Master Encyclopedia, copyright 1942, p. H-160.
The nine-tube EC-3 covered .545–30 MHz in three bands and had a crystal filter.Its tuning dial featured calibrated band spread. The EC-3 operated from 110 volts AC/DC and could be used on 220 by changing the ballast tube.
