dongles

What is the difference between the RPM2 Master and Distribution Dongles? Just getting started with Harris Any help would be appreciated.

Just wanted to show everyone my setup i'm using a pi 4 with two dongles and a LNA going out to a J Pole on top of my house i'm running SDRTrunk i'm also testing out OP25. i'll attach pictures. Thanks to everyone on this forum that has helped me so much, it's really meant more than you know and...