Andy Munitz Sony

Are you using the supplied UWP-D lav, or another lav?

That's strange, the vendor told me he even contacted Sony and the confirmed that there is no true diversity for dual channel operation. Only "Antenna diversity". Do you mean antenna diversity with these 4 tuners? It seems that the info you received was incorrect. The URX-S03D has true double tuner diversity for each of the two channels. For each of the channel's two tuners, a comparator circuit then chooses the best tuner at that moment, and does a switch between the tuners...not just antenna diversity switching...In the URXP03D, though, since the package is quite small, we could only fit in the two tuners. If only one of the channels is powered on, then it uses true double tuner diversity, but if both are on, then it uses 'Dynamic Switching Diversity' for each channel. By the way, if its helpful, the URXS03D is also compatible with IR syncing to our recently introduced UTXB40 and UTXP40 transmitters...and is also now available in the 941-960 range.

I asked some sony vendors. They confirmed that the slot in version has the same issue: True diversity only in one channel mode. Otherwise you would need four antennas instead of two (thats what they told me) Very sorry for the late reply...The URX-S03D (along with the DWX series DWRS02D's and DWR-S03D) has 4 internal tuners, with double tuner diversity for each of the two channels. This is regardless of whether one or both channels are powered on, btw. Also, both channels share the same pair of antennas. Hope this helps answer the earlier question.