I have a question about what system types are being used at the NCBI and Federal prisons in Cumberland Md area. ( MOTO Provoice Nxdn?? ) The data base just lists them as FM, I did a conventional discovery covering the frequencies listed and I get data bursts so it must be digital, I guess I can hook up my older scanner that has a discriminator tap and use DSD plus to see what it does, I thought I try to see if anyone has info here first. I have a diamond discone antenna up about 35 feet and have great reception from Winchester Va ( south )to Somerset PA( north ) and to Garrett Co Md (west) to Washington / Frederick Co md (east). I had the Moto upgrade on the BCD 436 I just sold and I want to upgrade the SDS200 I go with something that will give me the most decoding with an upgrade.