Note
QST, May 1964, inside back cover.
QST, Dec 1965, inside back cover.
QST, Feb 1968, p. 111.
QST, Jan 1969, p. 125.
CQ. Mar 1969, p. 16.
See National's notes: QST, Apr 1964, p 101.
See National's notes: QST, May 1964, p 113.
See National's notes: QST, Jun 1964, p. 111.
See National's notes: QST, Jul 1964, p. 117.
See National's notes: QST, Nov 1965, p. 119. <--interesting
See National's notes: QST, Mar 1966, p. 101.
The 2 KW PEP linear covered 80–10 meters. It was also rated at 1 KW, without restriction, on CW, AM,and RTTY. The amp used a pair of 8122 ceramic tetrodes. The internal power supply operated from 115 or 230 VAC.
Hamtronics ad: "National is back." First seen QST, Nov 1976, p. 131.
QST, Jan 1977, p. 147.
The NCL-2000 makes a comeback? Along with NCX-1000 and HRO-500.
The ads ran until May 1977.
References
Brief description/ Popular Electronics, Aug 1964, p .25.