rvacs, Can the Unication G4 receive/display radio UIDs? That was a big selling point of the 536HP for me. I might still pick one up.
I live out close to Lake Travis and figure the Four Points tower is my closest GATRRS tower. There are some hills between my house and that tower so I don't have good LOS to it. I generally get 99% good reception with the 536HP on E620 Simulcast 2, but it can degrade quickly with any weather, atmospheric disturbances, sunspots, Elvis sightings, you name it... Simulcast 1 is usually more circumspect with reception. If I listen to my 536HP against the ATCEMS Broadcastify stream (since its an official feed, I am assuming they are using system Motorola radios), I will occasionally see my radio lock on a TGID, sometimes even see the UID identify, but hear nothing but dead air on the 536, and then hear the missed transmission on the ATCEMS stream.
Ive seen reviews out there raving about the SDS100 on their simulcast system, and others that saw no difference. Was hoping that it would work better here in Austin.