Ok, but I’m telling you the radios are strapped to encryption. So here is what happens when a radio is strapped....if you select the channel where the key has been erased, you will get 6 quick beeps and “key fail” will display across the screen. You cannot transit. The centric switch is disabled and will not allow a clear transmission. The only way to transmit is to select an alternate key (if that option was programmed in CPS) that is current in the radio, such as an interop key. Again, you will not be able to transmit if it’s strapped to a particular key only. And even if it’s not strapped, and encryption is user selectable, the radios are programmed to sound (make a beep) upon a clear TX. So on a channel not strapped to ENC, if the user was to accidentally bump the centric switch, he would hear a beep as soon as he keys the mic and know he’s in the clear. I’ll leave it at that since there are those that tend to know more.