I am interested in the linked repeaters. Could someone explain in detail how the system works? How are these connected over the internet(do I need to be connected to a computer other than raspberry pi, is the raspberry pi wifi)? Will the Retevis work like a normal repeater locally and also connect over the internet to another repeater in a different location hundreds of miles away? Are there youtube videos of how this works? Are there any limitations or disadvantages using a linked GMRS repeater? Thank you