But that seems to hold even more true with DTV.
For the most part, stations broadcast DTV at lower power than they did their analog signals. I'm not sure of the reason for this. In some cases, stations were still upgrading their transmitters after the change-over date. (KQED, the PBS affiliate in San Francisco, finished transmitter modifications only about three weeks ago.) It could be that digital signals require less power to travel the same distance as analog signals; I'm not enough of a geek to be up on the comparative wave-propagation characteristics. The damned thing is, stations inexplicably haven't been forthcoming with information about how to best receive their digital signals.
It does seem, though, that DTV requires more precise antenna aiming than analog, thus practically requiring a rotor for an outdoor antenna and the knowledge of where to point it. (If you live in a fringe area and can't or don't want to put up an outdoor antenna, you're probably screwn.)
I'm fortunate to live between two teevee markets — or, I was. Before I moved, there was nothing between me and the transmitters in the San Francisco Bay Area, and I could pull in 40-something channels (including sub-channels, like 25.3). Now I'm in Santa Cruz and have the Coast Range between me and the Bay Area, so I'm down to 13 channels. But that's not nearly as much the fault of DTV as of topography.
One thing worth noting about broadcast teevee reception, analog or digital: If you live in a major urban area with tons o' stations and think you should pick them up with rabbit ears just because they're all in your city — well, that just ain't necessarily the case. Transmitters are often quite a distance from studios — usually on a mountain peak or in the middle of nowhere in flatlands — so while you may live across the street from the studio, you might be 50 miles from the transmitter.
This is the advice I'd give for the best possible DTV reception:
• Go to
http://www.tvfool.com/index.php?option=com_content&task=view&id=13&Itemid=1 and enter your address and stuff. You'll get a list of all the stations in your area and the strength of their signals, and the direction of their transmitters from you. (This won't tell you which ones you
will get, but which ones you
should.)
• If you possibly can, get an outdoor antenna — a yagi (the kind that look like old-fashioned antennas, with a bunch of rods stickin' out — "elements," they're called). Put it on a mast at least five feet above the highest point of your roof — the higher, the better. Secure it with guy wires.
• Put a rotor on the antenna. This will enable you to point it at the transmitter from inside your house.
• Get a signal amplifier. The best ones are in two units, with the amplifier mounted on the antenna mast and the power supply inside the house. A decent amp will boost the signal at least 20 dB.
• Use RG-8 coaxial cable, preferably quad-shielded, to connect everything. Use RG-59 only for jumpers from the converter to the teevee, etc., if at all. I had RG-59 going to the teevee that's closer to the antenna — a run of about 20 feet — and it was getting fewer stations than the teevee in the bedroom, which was connected by RG-8. I switched the RG-59 with RG-8 and, viola!
All that will run you around $250 (Radio Shack has all of it) and installing it will take at least a full day, and there's no guarantee that it'll bring a dramatic improvement over rabbit ears — there're too many variables, mostly having to do with where you live. But it
will improve reception, likely quite a bit. You pays your money and you takes your chance.
(Footnote: I wish I'd had the foresight in the months before the conversion to start an advisory/installation business for antennas and stuff. I coulda cleaned up.) :(