Note
QST, Apr 1956, p. 115.
Popular Electronics, Jun 1956, p. 19.
Radio News, Sep 1958, p. 137.
Allied Radio catalog 1959 (issued 1958), p. 382. (AT-30)
Allied Radio catalog 1960 (copyright 1959), pp. 394, 407
Allied Radio catalog 1961 (copyright 1960), p. 407.
References
Article on Class B CB. Popular Electronics, Jun 1956, p. 40.
Converting to 420–432 MHz. CQ, May 1963, p.74.