So I have an ICOM ID-5100A with a Comet GP-3 Dual-Band antenna, but I can't seem to be able to link to my local repeater KC1AZZ in Sutton, Mass. I'm provably 3-5 miles away from it. I know my radio is working properly as I've been able to hit other repeaters farther away. Just have not been able to connect to d-star and I've confirmed that I'm registered. Looking for some hints on what else to try. My antenna is in the attic by the way, moving it outside in a few weeks when it warms up.