We installed 406Mhz ELT's on our Falcons; always struck me as odd that our (CAA approved) design allowed the unit to be installed in the tail cone of the aircraft while the antenna was installed in the Dassault approved location at the base of the fin forward of the tailcone...
Given that the tailcone is a removable section of the airframe, in some cases a crash followed by an aircraft break-up and tailcone detachment would almost certainly result in the antenna feeder ripping out of its connector, thus rendering the installation useless...