[ARC5] A.R.C. Tee Drive Coupling P/N 12001

[Dave Merrill]

https://www.ebay.com/itm/Aircraft-Radio-Tee-Drive-Coupling-P-N-12001-New-Surplus-/265011897440?_trksid=p2349624.m46890.l49292

What was the application for this device? Multiple control boxes in the
same aircraft?

Post WWII, so A.R.C Type 12 or the like?

Dave
N9ZC
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