QST, Mar 1979, inside back cover. (The "ZD" digital display version was released first.)
QST, Oct 1979, p. 222. (Followed by the analog "Z" version in October. )
QST, Jan 1980, p. 109.
QST, Apr 1981, p. 103.
QST, Jul 1981, p. 177. (Mk III)
A a refinement of the FT-101 and FT-101E series.
QST, Jan 1982, p. 137.
References
Final Amplifier Current Monitoring. QST, May 1980, p. 40.
