Note
Viking ll
QST, Sep 1952, p. 82.
Allied Radio catalog 1953 (copyright 1952), p. 39.
Viking ll CD - with extended frequency ranges
QST, Jul 1954, p. 107.
QST, Aug 1954, p. 77. (details)
QST, Mar 1956, p. 129. (CD version again)
QST, Feb 1957, p. 139 (NOS?)
QST, Mar 1955, p. 91. (Nice cartoon)
References
Brief description. Radio News, Jan 1953, p. 119.
Use with Heath SB-10. Cq, Feb 1960, p. 30.