My Kenwood TS-2000X will dial down there as well. It initially stops at 30kHz, but the RX RIT can dial down an addition -20kHz so that you can end up at 10kHz. If this rig does this, then I suspect that the TS-590, TS-480, TS-570, TS-990, and other Kenwood rigs could probably do this too, and no modifications required.