I have been fascinated with repeaters, how they work, and what you can do with them. I have built three GMRS repeaters now. All of them worked with varying degrees of success.
The 1st repeater I built was using two Motorola Mitrek repeaters. You can read about it here
The 2nd repeater I had was an old Uniden repeater I had purchased on Ebay. This repeater was built and tuned by a fellow ham operator that had the proper equipment to tune it correctly. Unfortunetly, the transmitter stopped working on the repeater and I do not have the proper tools to diagnose it. You can read about this repeater here
The 3rd repeater I built was using two Motorola Maxtrac radios. I hope to fire this repeater up and use it. The cool thing about these radios is all you have to do is program the radios and they are good to go. No special tuning tools required. You can read about this repeater here