Note
QST, Aug 1956, p. 95.
Popular Electronics, Sep 1956, p. 19
QST, May 1960, p. 180.
The first fully transistorized converter.
References
Review. Popular Electronics, Sep 1956, p. 37
Review. QST, Feb 1957, p. 19.
Review. Radio News, Oct 1957, p. 164.