DH got a HAM license but never really used it. I’m encouraging him to learn it (ie read the books he has) because in times of poor comms, or who knows what, could be very useful to have.
I am just a listener; I had a good call sign - WB2ONI (Office of Naval Intel - not really) but that has been a dead key for some time.
The amateur radio license is good for 10 years, then you have 2 years to renew without retaking the test.