years ago, together with my kid daughter, dl8sdb, we built a keyer based on the Curtis 8044 chip. The circuit was from the ARRL handbook, 1985 (
) edition (as far as I can recall). The keyer is still here, ready to be resurrected to life, on permanent loan from my daughter.
However, the diagram is missing and the ARRL handbook gone.
Can anyone help me with the original article or circuit?
TNX and 73, Peter