Roadie wrote:

How many AM DX'ers are there?

...has no answer, but is likely quite small.

I agree, but I'd still like to see some kind of answer, or rough
estimate (like 10,000 nationwide). Guess I'll go google searching.



How many nighttime AM listeners are there?

The number of nighttime listeners is principally their
local audience and the counts are likely available
from Arbitron or the radio station in question.

arbitron only list 6am to midnight. There's no breakdown available
for nighttime hours, at least none that I can see.

The real question is whether radio stations really care about geting
an inconsistent signal to non-local listeners on nighttime AM. The
inability to provide a consistent signal coupled with advertising that
is usually local in nature would seem to indicate that non-local
listeners are not much of a concern to AM stations.