Yes there are stations that run 1 watt at night, there are quite a few of them. Some examples
you could look up at Radio-Locator are WSQR, WBNL, WZRK to name a few.
It is really hard to make money on these stations at such low power, there are quite a few
that do get a somewhat decent coverage area with 6 watts or more, not the majority of them,
a few do though.
One watt is really not helpful unless the population lives within a mile of the tower. Outside of
about a mile or so, the signal is most likely of no benefit.
Where your tower is located is extremely important too. I work at a small town station that is
allowed 6 watts at night, and we use it. We don't make much money at night, and are completly
automated at night.
Our tower happens to sit smack dab in the middle of the town we serve, so that six watts covers
about 80% of the audience we are going for during the day, so it does work for us.
Most stations I've encountered have their towers built a few miles out of town in a field. When they
use such low power, they rarely reach any populated areas with a listenable signal.
My station also happens to be up in the dial, on a frequency that is not to bad most nights.
Our 6 watts is listenable out to about 10 miles with no real problems, and is audible most
nights, to about 20 miles, although past about 10 miles you are not really getting a quality
signal that most would listen to.
I would say it all depends on the frequency, the tower location, in terms of what you get.
With all that being said, a lot of stations, regardless of power, make very little of their money,
during overnight hours.
My station is lucky in that our tower is located within a mile of the biggest employer in the
county. A factory which runs 3 shifts, and they listen to us. We also benefit from being close
to restaurants and stores that open between 5 and 6 AM, that listen as well. Without our very
low power at night they would not be able to hear us that early the majority of the year.
I'm glad they can, they are some of my best clients.
