Note
QST, Aug 1966, p. 133.
QST, Jan 1967, p. 125. (Details)
LK-2000HD (heavy duty)
QST, Jul 1969, p. 144.
LK-2000HD "new improved"
QST. Jul 1971, p. 147.
The LK-2000 from Brad Thompson Industries was designed for maximum legal input on all modes: 2000 watts PEP on SSB and 1000 watts on CW/AM/RTTY. The grounded-grid amplifier used a 3-1000Z tube and covered 80–10 meters. Its solid-state power supply operated from either 115 or 220 VAC.