Key QRQ CW on your RIG with CW Keyboard, Raspberry PI & an Audio Derived CW Rig Keying Diode switch

brief testing of FULL QSK keying of an ELECRAFT K3S at 65 wpm using FLdigi on a Raspberry pi 4, sending 2400hz CW AUDIO out of the PI's headphone jack to an audio derived CW Rig Keying Diode Switch circuit that keys the RIG's CW JACK

the circuit rectifies FLdigi's 2400 hertz CW audio and stores it in a 1uF CAP... and uses that voltage to forward bias a DIODE(for the length of the CW ELEMENT) that is connected across the RIG's CW JACK contacts(orientation of the DIODE is chosen so that the diode by itself, without any bias current, will not allow the RIG's CW JACK to "turn on" and key the rig...)
[ diode ~ 1n4007 ]

QSK receive AUDIO is heard between letters at 65 wpm

for other methods and circuits, to key CW on your rig like this, please see this ongoing article on our QRQ CW website here:
https://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer