There seems to be a dearth of "what is" and "how to" guides for
avionics. By this I mean some sort of guides for which models of radios
can do, how they are wired, interfaces, schematics, are those connectors
propierety (sp), etc.

This could be really handy for someone buying used radios. Is this radio
worth getting, or would something newer work? can this nav/com be
interfaced with that VOR? how about that panel GPS?


John