Some are lucky enough to point the HDTV antenna and receive all of the given channels. Most of us either have to split the difference, which is called splitting, and we compromise by aiming between two reception points. This usually results with less than optimum conditions and causes problems. Combining two different HDTV antennas can be tricky, but it is possible.

Maybe this would help — Terrestrial Digital DB8 Multi-Directional ‘Bowtie’ UHF DTV Antenna

Without going through a lot of hassle, it would probably be the simplest to use a PHILIPS PH61007 A/B Switch. I have tried this and it works great. Where this application works best: If you have that one channel that occasionally drops out and you have a second antenna pointed in that direction. You just run the coax and combine it inside the house, instead of outside.

I have an indoor HDTV amplifier in line with this setup, the 4 Port Cable TV/HDTV/Digital Amplifier Internet Modem Signal Booster Internet AMP. This helped with the weaker stations.

You simply slide the switch and view the program with the second antenna. There is no signal loss using this method. Most splitters will cause significant signal loss, making them undesirable because of this issue. Signal loss is not good. In satellite dish usage, splitters are okay because there is adequate amplification to carry the load. HDTV broadcasting is not the same.

There is another solution. This is using a Winegard CC-7870 Antenna Coupler to combine two outdoor antennas. Some have tried this method installing two HDTV antennas (10:40) and claim that it works. Supposedly there is little to no signal loss this way.

When connecting two antennas to this coupler, keep the coax the same length on each antenna. This is critical to this operation. Keep this in mind before installation.

After coming out of the coupler, one could use the RCA TVPRAMP1R Outdoor Antenna Preamplifier. This is another choice that is available.

Both options will work. The slide switch is convenient and the coupler will tackle the more serious issues. Good luck with the project.

I will suggest a third option that worked really well for me. I had two antennas pointing in different directions. Both fed into the house with two separate cables, which were joined together inside. For this I used the Coaxial T Adapter, F Female / Female / Female. This solution works great if both antennas pull in strong signals.

This adapter works well and the seller is fantastic.