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On Nov 22, 12:55 pm, IBOCcrock wrote:

Stations have always had unsold air time.

Correct. When stations approach sellout, they move the rates to a higher
grid and charge more. "If you are sold out, you are selling too cheap."

That's where they fit in
their public service extras.

No, when there is unsold time, we play more music, or cluster the spots to
do a music sweep.

And if they still have left overs - they
hire an ad agency to sell -- " public service reminders brought to you
by some local business" which helps pick up the unsold air time.

That is in very, very, very small markets. No rated market station with
audience will let a third party sell their inventory.

The
stations that have the most audience have less unsold air times -- the
stations with the smaller audiences - have more unsold air time. I
don't think that unsold air time can prove that terrestrial radio.
And stations sources of income have broaden from just air time
anyways. They have new revenue streams now to make up for deficits in
other areas.

Further, there are times of the year when demand in higher, and times when
it is lower, just like in TV or print or cable. That is an indication of
market conditions, not a failure of radio..