Something that one should consider is frequency alignment accuracy after X number of years. The radios we use are
acceptable and do a good job, however, they are subjected to a lot of vibration, extreme temperatures, and what a
typical professional industrial radio would consider "neglect". Ever have your system checked out at a manufacturer's
or their authorized service agent's facility? In the vein of power management I chuck my entire set of batteries every
other year...without question regardless of the battery conditioner's latest readout. Crashed receivers need to be
professionally looked at before a life threatening takeoff occurs...;^) Think about that last high G abrupt stop your
onboard flight system encountered. Just a thought, before you find yourself wishing you had your's checked.