Your call sign phonetics
Some amateur radio operators are aging and losing their hearing. They have trouble distinguishing between certain letters like d and e, m and n, t,v,g,e,b, s and f or in general any two letters that sound similar. In QRM and QRN even younger hams with perfect hearing may have problems. Since our objective is effective communications, we should use phonetics when needed especially for some call letters. We should also obey the FCC rules to identify our station call signs periodically during a QSO in my opinion. I know I'm "preaching to the choir" on this, but many amateur radio operators need to practice their diction and phonetics as well as a more exacting speech pattern when speaking on their radios as conditions require. Note that not all stations may be receiving you as well as your 599 RST report.
When I first became an
When I first became an amateur radio operator I noticed that people, particularly on repeaters tend to spit out their callsign as once continuous mess without thinking about it. I think we just tend to get lazy and by "we" I include myself.
It's also bothersome to me when I'm trying to copy a callsign phonetically and some people "change-up" the phonetic alphabet on subsequent iterations. If you have a catchy phrase to go with your call, that's usually helpful.
I haven't really noticed anyone not using their callsign in the required 10 minute interval except on some of the HF bands where I suspect the operators didn't possess callsigns. I was actually chided once for sending my callsign too often. I explained that I was usually talking on a net so when I got a turn I automatically added my callsign since it was probably time to do it anyway.