While you can use a Roku with a Simple or Tablo DVR to stream broadcast television over your LAN, it's usually best to run coax directly from the antenna to the television. I did not have any better luck with antennaweb.org than you did. I found TVFool.com produced a much more useful report. TitanTV.com is a good guide to what is on the stations you can receive.
Initially, my goal was to keep the antenna in my attic. It's easier to maintain an antenna out of the weather and they hold up better in the attic plus there is no need for grounding. My first antenna was a DB8. It did a very good job most of the time. I added a Y5-7-13. Later, I replaced the DB8 with a 91xg and the Y5-7-13 with a Y10-7-13. Over the winter, I acquired a DB8e on the cheap and am looking forward to mounting that on my mast later this summer. I have ganged a pair of 91XGs vertically and horizontally. I have used UVSJs and mast mounted amplifiers to join my antennas. I have cut down some trees. I will be cutting down some more trees.
For my trouble, I get lots of television for cheap. We get three PBS affiliates along with Explore, World, Create, and Kids sub-channels. We get national networks: ABC (WCVB in Boston and WMUR in Manchester, NH), CBS, NBC, and Fox local affiliates. We get syndicated networks: Bounce, Cozi, Fox Movies!, getTV, ION (ION, qubo, IONLife), MeTV, The Works (MGM), and ThisTV. We get a couple local broadcasters: WSBK, WLVI (CW/ZUUS), and WBIN (occasionally, for now). We also receive Portland, ME, Bangor, ME, and Providence, RI channels under the right conditions.
Inside the house, I have six TVs connected with COAX and a couple more connected with Simple via Roku. I have five simple DVRs in my basement which harvest programming for later viewing. They also provide remote and wireless access. We have DTVPals on five televisions.
I have a HDHomeRun that I use to point antennas and learn about my reception. The HD Homerun (HDHR3-US) reports signal strength, signal quality, and symbol quality on two channels concurrently. It's handy to see that you are not screwing up one channel as you tune in another. You can also use the HDHomerun to get signal to a media server.
After five years, I am still playing. This year, I am going to put the DB8e on my mast to see if I can get all the channels in my major market (Boston) plus a 91XG for WBIN and the Y10-7-13 for NH and ME vhf stations. I'll pair a 91XG and the Y5-7-13 in the attic as a back-up for my major market and NH and ME vhf stations. The DB8e/Y10-7-13 will feed my televisions and the rest will feed simple DVRs.
A TVFool report looks like this (note the two HDHomeRun windows to the right)...
It tells you where the broadcasters are relative to your location, the real and virtual channel assignments (real channels 2-13 are vhf), and if there are obstacles in the path between your antenna and the broadcaster. You can point the antenna with a compass, but the HDHomeRun provides better pointing information...
Signal Strength (ss)
- raw power level as measured by the receiver
Signal Quality (snq)
- how clearly defined the digital data is
Symbol Quality (seq)
- Amount of correct or corrected data over the last second
The above definitions can be confusing, so a much simpler definition is to imagine listening to the radio:
- Signal Strength represents the volume
- Signal Quality represents how clearly you can hear the lyrics
- Symbol Quality indicates the percentage of the lyrics you could hear or guess correctly
It's easier to deal with a UHF/VHF antenna, but joining two antennas allows you to point each independently. You can use a rotor so long as all of your TVs watch stations in the same direction.
Once you get the signal inside your home, you have a LOT of options. You can plug directly into your TV and use its tuner. You can watch live, continuous television. You can put a set top DVR between the set and the antenna to pause/rewind/fast forward and record programming. TiVo is the premier DVR, the iView 3500STB is an inexpensive alternative, and the Channel Master DVR+ provides much of the functionality of the TiVo at a price closer to the iView DVR.
I like the Simple DVR as a non-interactive DVR. You can record shows for later viewing on up to five televisions (via Roku). Some smart guys have figured how to pull the shows off the disks so you can play them back via Plex or some other server. You can also watch your antenna and recordings remotely using a PC or even a Roku.