Note
QST, Sep 1979, p. 184.
QST, Jan 1980 p. 118.
QST, Apr 1981, p. 176.
QST, Apr 1982, p.127.
The 408 Deluxe Electronic Keyer II used an 8044 chip with a speed readout function. A meter on the front panel indicated code speeds to 50 wpm. The 408 was compatible with either single- or double-lever paddles and also had a semi-automatic “bug” mode.