Note
QST, Aug 1958, p. 129.
CQ, Sep 1958, p. 12.
QST, Feb 1963, p. 107.
QST, Oct 1963, p. 141.
QST, Apr 1964, p. 139.
Kit or wired.
The 730 delivered 50 watts of audio, sufficient to 100% modulate Eico’s 720 or other transmitters having input power up to 100 watts. The 730’s output transformer matched loads from 500 to 10,000 ohms. It had an over-modulation indicator and incorporated speech clipping and filtering.
References
Review. Popular Electronics, Sep 1959, p. 81.
Review. CQ, Apr 1962, p. 46.