Originally Posted by Sandy H.
The antenna is an antennas direct DB8 (15db gain, long range multi directional) and it has a single 4 way splitter to go to the 3 inputs of the HDHomerun units. The coax was not part of the house and I believe it is RG6, but I can't recall for certain and it is a short (<25ft) run. I have the ability to run new coax if that would be helpful and I could also switch the splitter out for a 3 way, since one port is not currently used and I am not sure if the splitter bandwidth goes to 900MHz or not.
I'm open to ideas for further improvement, but would prefer to keep an attic mounted antenna if practical..
I have a DB8 in the attic that feeds a single 25 ft coax to one HDhomerun. I found that you need a pre-amp due to having it in the attic. You will want to make sure that you don't get one too powerful. I'm using the lower power winegard. You will find the 4 way splitter is going to significantly reduce your signal on the house side, the pre-amp will compensate. I also modified my DB8 to better receive towards the lower end of UHF. I did this by lengthing the elements on the antenna by an inch or so. I don't remember exactly how much, but if you do a search for a post I made on it, you might want to have a look. It had the benefit of making WTVI come in even from the backside.
Unfortunately, I think it's going to be difficult to get all the CLT stations with a single antenna in an attic. I'm using 3 now; the DB8 in the attic, a single 4 bay outside, and my home made in the attic. The latter two are connected via twinlead which means I don't need an amp. These antennas are connected to a whole house DVR (mythtv) which then feeds all the TVs in the house via IP. It works well, but it's also a bit of work to setup. The added benefit of this is I can use the same system as a distributed HTPC.