The only thing I can assume it might be is that scanners don't properly handle CQPSK which is what the TPS system is using. Simulcast P25 uses a different modulation technique than a non-simulcast. For example, Fleetnet is using C4FM non-simulcast which is why it works fine on scanners, but systems like TPS, Halton, York, Peel and Metrolinx are simulcast which a scanner can't properly handle.
Try turning on your attenuator - it makes my 396 happier on the Toronto system.
Try turning on your attenuator - it makes my 396 happier on the Toronto system.