There are a few UHF radio frequencies that I believe are part of a LTR radio system, although the DB lists them as conventional. Is there a way to use the SDS100 to locate the remaining frequencies if in fact the frequencies in question are part of a trunked system? This may be a wild goose chase, but I think there is something there since when I monitor them on a conventional scanner I hear the motorboat noise of a trunked system.