What is better then two, you guessed it that's three antennas. The addition of this extra antenna gives the user an ability to receive signals from the buried victim no matter what the oreintation. During your search pattern this relieves those black out spots that occur. This beacon is also a reasonable price it is not the cheapest on the market but for the features that it has it's quite good.
The multiple victim search on this beacon is a bit sporadic. Also with this beacon being only digital the precision is slightly less.