SO2R switchbox

I’m still working to get the station up and running for some SO2R in phone and digi. I started by looking for a way to switch audio and PTT for my 2 (oldtimer) transceivers (TS-50S and FT-990).

As a commercial controller seems to expensive to me for the moment I found a way to homebrew a *basic* switchbox myself. The layout is based on this one made by DL1IAO but with a few enhancements:

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