Martin, if you see this and have a moment, please could you check out the decibel ranges on your IDM207. I'd like to know the lowest amplitude signal that the meter gives a display for, particularly on the dBm range. The manual says it's -15dBm but qualifies it with "typical". What annoys me is that the dBv ranges goes down to -80dBv, which is a quite a difference and far more useful. Also, it doesn't appear to be able to do this, but can it display volts and dB at the same time?