Note
QST, Apr 1975, p. 154.
QST, Dec 1976, p. 184.
QST, Aug 1977, p. 152.
QST, Sep 1978, p. 172. (now using the 8044, with dash memory as standard).
QST, Aug 1979, p. 156.
This flea power CMOS keyer uses the 8043 IC to reduce complexity and increase reliability. The EK-430 features self-completing dots, dashes and spaces, instant starting clock, iambic operation, dot memory, element weight control and built-in sidetone with speaker.
Powered by either 117 VAC or a 9-volt battery, transistor output switching keys up to plus or minus 300 VDC at 200 mA maximum.
Key debouncing circuitry for operation with any type of key paddle regardless of the condition of the contacts.
