I just finished a short internship at KMOX ...
It sounds like there's still a few 1A2s out there. In fact about 20 years ago I worked at a AM/FM station (AM just a daytimer 500 watts), they had an electronic TIE system with no delay for phone calls on the air. I remember I had the opportunity to interview 2 members of the rock band Def Leppard & I took a few phone calls from listeners. One said "Wow Def Leppard..holy #&%T!". Loud & clear over the air.
