[CW] One Key, Multiple Radios

[D.J.J. Ring, Jr.]

I've hesitated to post this numerous times... but I keep seeing folks using
switch boxes to connect a single key to multiple radios. There's an easier
way with no manual switching needed. And so, here we go... The circuit
shown in the jpg allows me to connect a single keyed line to multiple
modern radios... The one keyed input pulls down the connected radio key
lines. The diodes prevent powered off radios from keying the rest of the
connected devices. I load diodes on both tip and ring allowing the splitter
to work with a single keyed line as well as with a paddle. The small pcb is
housed in a 3D printed case. This could be made as a simple home-brew using
a few connectors and Schottky diodes. I strongly recommend this circuit
only be used with modern radios switching low voltage at low current!

73 Bob Leichner WO6W
Via N1EA
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