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Old 7-May-2014, 2:00 AM   #11
informel
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Join Date: Apr 2014
Posts: 5
Quote:
Originally Posted by MetHerb View Post

You are correct in that I have one VHF antenna (AntennaCraft Y10-7-13) and UHF antenna (Winegard HD-9032). I have them stacked appropriately and one coax run to my tuner. What I'm trying to understand is that I know I'm loosing about 3.5db by joining the two antennas - will using the UVSJ joiner from Holland reduce that to just 0.7db? In essence, isn't that a 2.8db gain?

Thanks again....Dave
when you use a splitter, you do not loose 3.5 DB, in fact you loose .5DB. the 3DB difference comes from the fact that the splitter split the signal in 2, each output has half the power or -3DB.

You can even use splitter to combine 2 identical antennas, this in theory double the power or +3DB minus losses equal +2.5DB.

Bur when you combine a VHF and a UHF antenna you have to use a VHF/UHF combiner to prevent one antenna influencing the other
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