While listening to ATL Center a few years ago, sometime in the early morning before the rush, a guy checked on and was totally unreadable.
"Calling center, say again...."
another garbled transmission...
"Calling center, you're unreadable, try another radio, headset, microphone, pilot, or airplane......"
Another one, coming out of HSV around 0400, with all the red eyes coming in from the West Coast going to ATL. I checked on about 10 min before at least 6 Delta guys, whole all checked on within seconds, and then started requesting all sorts of off the wall stuff. Probably to relieve boredom.
MEM Center: "Everyone SHUT UP!!! It's way too early, and I've got way too **CENSORED****CENSORED****CENSORED****CENSORED** many airplanes to deal with you're crap... Speak only when spoken to....."
After about a 2 minute silence...."Hey Memphis, you got time to copy a PIREP?" It was clear and a million... I thought the controller was going to come apart at the seams.....