It was a pirate. Since it was strongest downtown, I assumed that it was near my GCHQ. It faded out the farther west one drove. In the Ingram Park area it was inaudible. It was strong by Broadway/410. It never ID'd itself, nor were any human DJs ever heard on it. It played rock music nonstop. Other people at work heard it, too. I don't remember when it disappeared, but it if the FCC busted it, it never made the papers or GH's World of Radio.