QST, Sep 1961 p. 102.
QST: Sep 1962, p. 107. (Info)
QST, Sep 1962, p. 127.
QST, May 1963, p. 139.
The Loudenboomer amp ran 2000 watts PEP using an Eimac 3-400Z triode. It worked on 80–10 meters and required an external power supply. The amp became the HT-45 after Hallicrafters acquired Radio Industries in 1963.
References
Review: QST, Jun 1962, p. 55.
