> The only way to do the close spaced frequencies 447.750 and 447.850 > is with a hybrid type combiner.
One is not restricted to using a hybrid... it's just a question of how practical and cost effective going another route would be. Real world loss using a hybrid is over 4dB per leg... of which I'm not a fan about space heating a radio vault with terminated rf power. The most practical choices are to be made when we hear if he wants to use one or more antennas and any receiver requirements. cheers, s.
