JJSPC1372, no proof, no fact, just opinion. I believe there are a number of them that are silent and have not reported to the FCC, or playing the paper game. ie: AM 1300 did it for some months. Staying on but modifying, or limping their signal. ie: WBIG-AM, WCKG-AM. There has been an increase of apps submitted to go dark due to economic conditions of their respective markets. You will see this increase with time too as the economy is rocky.

Even at the ridiculous fees that iBOC/HD iBiquity charges to lease monthly HDx streams on the FM band, end of day, it is cheaper to run an HDx or pay rent for it rather than paying the electric bill, maintenance, equipment, towers, engineers, land poisoning, eye pollution, etc. Most of these AM driving translators, the AM is not being listened to, especially in Urban areas with a more robust cell wireless/IP infrastructure.

Z