Info on Cook Radio Nav adapter?

Hey folks... maybe someone in the collective memory knows something about
this. I've got a small box (4"x2"x1") that says

Universal Navigation Adapter
Model UNA-1
Cook Radio Corp

It's got a DB-15 and two DB-9 connectors on it. I believe it's a switchbox to
run one nav head from two radios (e.g. a KX-165 with an IFR GPS on one KI-206). Does
anyone know anything about it? I've tried a quick google for it, but can't seem to
find any "Cook radio corp"

Thanks!
-Cory

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* Cory Papenfuss *
* Electrical Engineering candidate Ph.D. graduate student *
* Virginia Polytechnic Institute and State University *
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