I have a radio shack pro-528 scanner. I stopped receiving South Kingstown police over their assigned frequency of 155.55 approximately two weeks ago. Occasionaly I will hear one bit of info transmitting. Also, two or three times I have heard their ems on this frequency, which I was never able to find before. My question is, Have they switched to a digital frequency?, which I will not be able to receive on this scanner. Or are they using a different frequency, which is not yet able available in the database? Also, is there ems frequency known to anyone?