You can use a dual band antenna with a dipelxer and duplexers on each band but there are trade-offs. When we first put up W6DHS, we were using a dual band Comet 11dbi on 2 meters. We replaced the two meter side with a DB Products dipole array 6dbd. We measured a 15db signal increase over most of our coverage area. There are differences in the quality of amateur products vs. commercial, not only in accuracy of gain figures, but survivability as well. If you use a dual band amateur antenna, know that it's probably a temporary solution to buy time for some additional fundraising. Ernie W6KAP
--- In [email protected], "Skier" <ldssk...@...> wrote: > > If you are installing a D*Star repeater stack (2m 440cm modules) can you > use a single dual band antenna for both modules or do you need separate > antennas for every module in the stack? >
