mikeyj350
Well Known Member
Hi all,
I'm slowly starting to plan my antenna choices and placements as I get further into the fuselage kit of the -10. I'm starting from [near] zero knowledge on this subject and trying to learn as I go. I came across a "great deal" on a pair of Comant CI-120-G/S sharkfin antennas that I'd like to use for my VOR/LOC/GS. As I understand it, they are normally installed in pairs, then wired to a "combiner" which then (depending on your equipment) may need to be diplexed out into NAV and GS. Furthermore, if you want to run this signal to two NAV receivers, say dual 430's, you'd need to [quadraplex?] it out behind the panel. Well, the antennas I'm looking at don't come with the combiner, just the two antennas. Each antenna is stamped with the same part numbers (CI-120-GS), and each of course has their own BNC connector. Ok so here's my question:
If I want to run dual NAV receivers (dual GS, etc), is it an acceptable method to ditch the combiner and just run two diplexers instead, yielding two completely independent antenna runs to two independent NAV receivers? In my mind that sounds like the best idea, plus I don't have to buy a combiner Or, does the combiner/quadraplexer setup give you improved reception greater than the sum of each individual antenna? Failure modes of each?
Any clarification on this would be great... thanks in advance!
I'm slowly starting to plan my antenna choices and placements as I get further into the fuselage kit of the -10. I'm starting from [near] zero knowledge on this subject and trying to learn as I go. I came across a "great deal" on a pair of Comant CI-120-G/S sharkfin antennas that I'd like to use for my VOR/LOC/GS. As I understand it, they are normally installed in pairs, then wired to a "combiner" which then (depending on your equipment) may need to be diplexed out into NAV and GS. Furthermore, if you want to run this signal to two NAV receivers, say dual 430's, you'd need to [quadraplex?] it out behind the panel. Well, the antennas I'm looking at don't come with the combiner, just the two antennas. Each antenna is stamped with the same part numbers (CI-120-GS), and each of course has their own BNC connector. Ok so here's my question:
If I want to run dual NAV receivers (dual GS, etc), is it an acceptable method to ditch the combiner and just run two diplexers instead, yielding two completely independent antenna runs to two independent NAV receivers? In my mind that sounds like the best idea, plus I don't have to buy a combiner Or, does the combiner/quadraplexer setup give you improved reception greater than the sum of each individual antenna? Failure modes of each?
Any clarification on this would be great... thanks in advance!