"Epsilon Rho" wrote in message
...
I have purchased for very little money two identical VHF TV Yagi-Uda
antennas. They have 300 ohm output impedance, 5 elements, wide band.

I am thinking to install both on the mast and connect both to a mixer in
order to double the output. I'm not an expert in antenna design and
therefore I'm asking for some clarifications:

1.. If my supposition is correct, at what vertical distance should I
install the two antennas to avoid cross interference?
2.. I assume that to double the signal the cable type and length from the
two antennas to the mixer has to be the same. Correct?


Thank you very much,


You could get close to 3db gain - or - one could cancel the other.
Here's a link with some explanations for ya
http://www.astronwireless.com/topic-...i-antennas.asp