EyeTV software version 3.6.3 and above can use two of the EyeTV Netstream 4Sat tuners by default. The other two are reserved for mobile use.
However, you can try a special command in the Terminal, which is a currently experimental (unsupported) way to use four tuners all at once on your Mac.
1) Quit EyeTV
2) Open the Terminal application, from the Applications/Utilities folder
3) Enter this command into the Terminal
defaults write com.elgato.eyetv “max SAT2IP tuners” -int 4
4) Press Return
5) Quit the Terminal
6) Launch EyeTV again.
This assumes that you have the appropriate LNB that has the capacity to receive 4 channels at once.
Using 4 tuners at once will significantly increase the amount of network bandwidth in use, and will require more processing power. Performance may be hindered depending on your computer and network speed. You may not be able to receive 4 simultaneous HD channels via typical wireless networks.
Since this is an experimental and unsupported feature, we welcome feedback, but cannot yet guarantee that the experience will be 100% stable.
Please note that the number of channels which can be watched or recorded simultaneously of course also depends on the satellite configuration:
DiSEqC has to be configured correctly in the EyeTV Netstream app settings.
The User Bands have to be configured correctly in the EyeTV Netstreamapp settings.