For comparison of signals when I was running satellite trucks, the
analog signal power range was between 50 - 200 watts with it usually
ending up around 75 (200 was during a hurricane). Last I remember,
digital transmissions were in the 25 watt range. Signal bleed was a huge
problem in both formats so I would have to concur with Tony; what you
have now, transmission-wise, is it. They are cramming so many signals in
the bandwidth that it doesn't take much to interfere. 5 years ago we
weren't even allowed to put up 100% color bars due to analog interference.
Richard P.
Unlikely. Stations are licensed by the FCC for a specific power on a
specific frequency, and getting approval for more power is almost
unheard of since they'll always be stepping on someone else's toes.
They're spending small fortunes to buy new transmitters, and it seems
unlikely they'll buy one that only outputs a fraction of what they're
approved for, then buy another one next year. Sometimes stations can
improve coverage by leasing/building better transmitter antennas
(location, altitude, polarization, etc.).
More likely *receivers* will improve, digging more signal out of the
background noise. And people will learn to set up the picky antennas
better. i.e., pointing it right _here_ for this channel, and pointing
it right _here_ for another.
Digital TV doesn't carry as far as analog. We get ZERO channels using
the digital tuners.
A few months back I saw a chart of the power used for the different
channels. In almost all cases the power on the HD channels was much less
than for the old analog channels. Perhaps when they drop analog, the
power on the digital channels will be increased?
In the days before cable and even now when cable does not carry all
digital channels there is a good reason for the station to make their
power as high as possible.
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