I had an aftermarket HD radio installed in my G2 (with preamp) for a few months and then removed it out of frustration. It's nice when it works, but the constant and distracting fading in and out of digital makes it fairly worthless to me. I'm sure there's nothing wrong with the OP's equipment. It's the technology (or maybe the regulation of that technology) that is fundamentally flawed. XM was still worse, though. At least with HD you have an analog signal as backup!