Ahh happy to see some amateurs radio here. Very good project you got there. Nice work!

I'm working on a repeater in my house, just for fun.

You can see some pictures here : http://va2rme.com/photos.php

(Explanations in french, sorry)

Actually using multiple Arduinos to make the COM port communication interface between electronics and computer. I should spare some money to try this Rasberry Pie. I've linked the repeater on Echolink with a simple USB/Serial Port converter and an arduino. Working fine for now. Even still in experimentation. But I've to admit, I like your portable Echolink interface. Maybe I'll get on it for fun.

Amateur radio starting to be abandonned arround me. There is some clubs who own a couple of repeaters but they do nothing. They are not experiencing anything. When I've tried to help them and make some activity I got an "It's ok like that. We don't need to do anything. Our club and our repeater won't need to be modified...". So amateur radio starting to die here. I'm trying to have some fun on my side, but radios, alone, are not very enjoyable =P