I did a search and I saw a post several months ago about adding MDC-1200 to Uniden. Granted, much of the focus is on trunked systems, and I listen to them, too, but I wouldn't mind seeing MDC-1200 decode display on the Uniden line. Much like Radio ID has been added, MDC-1200 could display on that same line when monitoring a frequency that uses it. I have used WinMDCD while listening with a receiver in the past and it worked pretty well. This software uses the sound card input from the headphone jack of the scanner. A data slicer is not needed. A discriminator tap is also not needed, but would probably increase the level of detection.
antistatic.org - winmdcd
antistatic.org - winmdcd