QST, Oct 1961, p. 193.
QST, Mar 1964, p. 159.
The NC-155 was a double-conversion ham-band receiver covering 80–6 meters. It used 10 tubes. National’s Ferrite Filter provided selectivity bandwidths of .6, 3, and 5 kHz.
References
Review: QST, Jul 1962, p. 47.
Review: CQ, Jan 1963, p. 38.
