This is a discussion on Do you have to buy an antenna for each TV in your house? within the DTV | HDTV Reception and Antenna Discussion forums, part of the Over-the-Air (Antenna TV) category.
It would depend on your signal strength and how many TVs you have.
If you have cable, you can use that cable to run to all your converters, but you may need an amplifier if you have a lot of tv sets.
Have you got an antenna yet? If you go to TV Fool, enter your information (just your location) and post a link to the results, we'll help with that, too.
MrPogi is right on what he posted:being able to use the existing cable line for OTA TV (as long as it's still good) and might need an amplifier if they're long runs of cable. If you go to TV Fool.com, you'll get an idea of what stations broadcasat on which channels, and whether you'll need a VHF/UHF antenna (if go with separate VHF & UHF antennas), or if you'll be lucky to only need a UHF antenna or 2 (or more if the towers are in several directions). Antennaweb.org is also a good site, but not as good as TV Fool, but it's also helpful, as that site color codes each station for the type of antenna you need. If any stations call for a pre-amplifier, you'll need to have that installed both outside on the pole, along with the actual amplifier inside. As long as you can have an antenna outdoors, get as big of an antenna as you actually need, and not get the biggest one out there, unless you're into trying to pickup out of market stations.
Solidsignal.com & summitsource.com are 2 online stores that sell antennas. You can also find some good deals on ebay & amazon.com, but selections might be limited for certain models. Lastly, if you need an antenna with VHF on it, then most likely all you'll need is one that is optimized for channels 7-13 for VHF. If so, then don't bother buying one that is optimized for 2-13 or 2-6 (VHF portion only on a VHF/UHF combo antenna), because the longer elements won't be necessary if there are no stations on 2-6.
Submit your TV Fool chart so we can get an idea of what stations are in your area, and what type of antenna(s) you'll need.
Just as a heads up, if you live in Michigan, Solidsignal adds 6% sales tax (unless it's gone up since I last remember shopping in Michigan in 2006) to Michigan orders. If you live in Indiana, Summitsource.com adds 7% sales tax to orders, and shipping charges are taxed (I know because I live in Indiana, and used to order from BMG Music Service & Columbia House, and was taxed on shipping). On ebay, you only pay sales tax if you order from a seller who resides in your state. With amazon.com, go to this link to read about how sales tax is calculated. It varies from Amazon.com & sellers going thru amazon.com via Amazon Marketplace.
Last edited by dave73; 08-28-2010 at 10:07 PM.