In article ,
"David Eduardo" wrote:

"Telamon" wrote in message
...

I don't think radios that have production runs of a few hundred or a
thousand or so were taken into consideration. There are relatively few
radios that are incompatible by 100%... most have the "DX receivers" have
the ability to change mode.

So how many Sony 7600G radios do you think were produced?

I'd be surprised to know that they sold over 20 thousand in the US. There
are various estimates, but the range is 700 million to 1 billion for all
working radios in the US.

I would not know but that doesn't stop you does it.

Most broadcasters and the FCC think this; it was the basis for approving
an
in band on channel system.

They didn't ask the listeners and they did not listen to the stations
that have good regional coverage.

All 25 or 30 of them? Most of those stations, perhaps nearly all, do not
care about anything except the strongest groundwave coverage areas.

One would be enough but the number is a lot more than 25 to 30.

It will expand to the remaining good signals and to smaller markets... if
AM
is even around that long.

That is your flawed theory and you don't care do you.

Do a nice little straight line history and project into the future the total
AM listenership in the US and its age level. Within th enext decade, it will
be almost entirely over 55, and down to about 6% to 7% of all radio
listening.

The only straight line I see is the HD driving listeners away evenings.
Using statistics to predict the future is foolhardy at best. You don't
know the future.

--
Telamon
Ventura, California