Well, seems like you did the first step which was to make sure there was no repeater in the area. The next questions you need to answer: What do you want to get out of your repeater? Who will be using it? How will users be using it? (Portable, Base, mobile, Exc) What kind of terrain do you have around you? (Flat, Buildings/trees, hills/mountains) How much are you willing to spend? What features would you like? Answering these questions gives you a ballpark idea of what you will need and what you'll be spending. My current set-ups include: Repeater: (RKR1225/GR1225) This can be an RX/TX radio pair, but I like the cleaner all in one look. Controller: if using an RX/TX radio pair (Again, repeaters have this all in one usually) Duplexer: and you'll want a good BP/BR duplexer as the "notch" type duplexers don't seem to get good service range. Power supply: Can be a straight in power supply, I use a back-up power supply for one of the two repeaters in case the power goes out. Note, whatever power supply you use, it needs to be able to supply 12-13VDC at about 15-20amps depending on what your powering. Line filter: If you get a buzz or hum during transmit, your power supply may be adding noise into the repeater, a line filter takes care of that. Jumpers: For connecting repeaters RX/TX to the duplexer Feedline: As much as you need to get to your antenna, Antenna: should be higher gain for repeaters. Optional: Mast/Tower: If your not on the top of a hill, and you have a lot of buildings or trees you may need to purchase and erect a mast or tower to give you extra height. Rule of thumb is for every doubling of antenna height, your range doubles. Node controller: There are a few out there. MyGMRS sells them as well. Radio interface for node controller: Need to connect to the radio somehow Computer/Programming software/programing cable: For adjustments and programming of the repeater if you know how to do this. Come up with a plan and RESEARCH before buying any equipment.