I know this topic has been closed but wonder about one point... how the antenna was connected to the SDS100. It seems we all assume the SMA to BNC adapter supplied by Uniden was being used... was it? Or did the poster use another adapter that did not fit the SDS100? That collar may have prevented center pin conductivity? The other scanner played ok... Or, was there also an issue with the SDS100 not playing when the stock antenna was reattached, and it caused a concern because the last thing done to the SDS100 was the addition of the a BNC T, so, that must be the fault cause? When in fact it was that the correct Uniden supplied SMA/BNC adapter was not used?