Originally Posted by Travillion
I apologize for not answering your question about the antenna selection. I do want some feedback on that, but I also didn't want the thread to digress before getting a few opinions on whether the roof would be an obstacle. Seems to be an unknown, but at least I haven't heard any strong feedback against it.
I would be surprised if anyone could predict with great precision the results of roof reflections that combine with the direct signal to your antenna.
I think your mounting location has a high chance of being satisfactory, but I am reluctant to guarantee success. I don't know what your location looks like, but if you send me the exact coordinates of the proposed antenna location in a PM to protect your identity, I can look at the green signal lines in a satellite view.
Your TVFool signals report assumes that your antenna will be outside, in the clear, with no objects in the signal path. It is obvious that you understand that when you mentioned the antenna will be high enough for the signals to clear the roof. If you have to extend the J mount, you will need to add diagonal braces (struts).
I am considering a few different antennas. I was initially drawn to the Antennas Direct ClearStream 2MAX because it looked clean and unobtrusive, but it's not really designed for VHF and I have a few VHF-Hi channels that I care about. So then I was looking at the Channel Master Suburban Advantage (CM-3016)
or the Winegard 45-mile range (HD7694P)
, but they look pretty big and I worry about my HOA. I know the FCC protects my right to mount an antenna, but I still don't want to tick off the HOA because they can make my life miserable in other ways. Also in consideration is the Channel Master Compact 45-mile range (CM 2016)
, which I think would go unnoticed by my HOA, but will it be too "lightweight" for my needs?
I favor the original Antennas Direct C2VJ over the current C2MAX which is more readily available. The C2VJ comes with a reflector and a J mount. If you order the C2MAX, I suggest the additional accessory reflector be added to reject multipath reflections.
It is true that they only have a simple dipole for VHF-High channels, but with a listed noise margin of about 55 dB for your VHF-High channels, you could suffer a lot of signal loss before you are in trouble. If your report is accurate, you shouldn't need, and shouldn't use a preamp because of the risk of overload. If you have long coax lines and many TVs, a distribution amp can replace the splitter.
The CM 2016 (Digital Advantage 45) also has a dipole for VHF-High; its performance should be similar to the C2V or C2MAX with reflector.
The CM 3016 does have more VHF gain, but it also covers the VHF-Low channels 2-6, which you don't have. The VHF-Low channels need elements that are very wide.
The Winegard HD7694 has good UHF and VHF-High gain. If for some weird reason you need more antenna gain, that would be a good upgrade.
You have some moderately strong local FM transmitters that might interfere with the reception of your VHF signals. If they do, a filter can be added down below.