Tigerbangs FYI,
I emailed this guy to make sure he didnt lead me the wrong way with the CC7870. This is what he said...
The CC7870 is basically a splitter in a weatherproof box. And I have no evidence that it is anymore efficient than a splitter. I think the type of combiner he was warning about is this: http://www.solidsignal.com/pview.asp?mc=03&p=UVSJ This one DOES attenuate the UHF on one side and VHF on the other. Because antennas interfere with each other this helps if you have separate VHF and UHF antennas.
Only the UHF /VHF Combiners have the .05 insertion. Our 7870 has 3.5 db loss, same as a two way splitter.
Mike
Solid Signal