Note
Ham Radio, Mar 1969, p. 80.
QST, Dec 1969, p. 136.
QST, Jun 1971, p. 139.
QST, Mar 1972, p. 148.
QST, Oct 1973, p. 165.
QST, Jul 1974, p. 126.
Initially called a "space age keyer."
The unit was updated at some point, probably late in 1972, but did not change in outward appearance.
The update includes the use of low impedance ICs to minimize RF pickup and they are heavily bypassed to make the keyer practically RF proof. A blocking-oscillator pulse generator provides instant start and never produces an unwanted dot or dash.
The keying mechanism itself is made by Brown and is adjustable for dot and dash travel and tension. On the rear deck is an input for receiver audio so that both the received signal and the keyer monitor tone can be heard on the built-in speaker or on headphones.
References
Brief description (updated version). Ham Radio, Feb 1973, p. 60.