(Sorry, screwed up and forgot title on last one)

Is there an easy way to combine two uhf antenna's? I have a quad bow tie with a mast mounted amp and I would like to also tie in my Yagi to see if I get any improvement.
Thanks

Signal splitters also work as signal combiners. Feed the two leads to a combiner.

In doing some research though I see people say they have to be seperated by wave lengths etc. If both antenna's are pointing in the same direction does that matter?

Both antennas must be pointing in the same direction or you wind up with a omni directional antenna which will produce bad ghosting (multipath distortion).

Since your antennas are not cut to a specific frequency but rather are UHF broad band antennas, the specific length of cable should not be an issue. However the combiner (splitter) should be as close to the antennas as possible.

When non-identical antennas are ganged, much of what the stronger antenna receives will be rebroadcast out the weaker antenna, giving you a highly deceptive impression of what is happening. In most cases the performance of the pair is worse than that of the better antenna. To avoid this, both antennas must produce equal voltage components at the combining device. If by uncommonly good fortune this is happening, it is still usually impossible to keep the antennas phased together over all of your channels.

When individual antenna amplifiers are used, the argument sounds different but the result is the same. In this case the increase in signal is less than the increase in the noise contributed by the two amplifiers. A more thorough description of the problems of ganging antennas can be found at http://www.hdtvprimer.com/ANTENNAS/16bay.html .