RF power dividers that allow additional antennas to be added to your system for increased range and performance. Every time you double number of antennas you get 3dB of gain (ok, there are some minimal losses to consider). You need 6dB or a little bit more of gain to double your range. This means upgrading your single dipole to 4-dipole antennas doubles your range and increases your effective radiated power to 4x the initial value.
- 1kw transmitter + 1xdipole antenna: ERP=1KW, antenna gain = 0dBd
- 1kw transmitter + 2xdipole antenna: ERP=2KW, antenna gain = 3dBd
- 1kw transmitter + 4xdipole antenna: ERP=4KW, antenna gain = 6dBd
(This is assuming no losses in coaxial cable and combiners)
Several combiners are listed and described below, select the one that fits your requirements and budget best.