When I returned from a 10 year absence from radio scanning, I started out with the BCD325P2. I was using the Remtronix 700/800 mhz antenna, and it worked fine with picking up both Kent and New Castle County Simulcast along with the NJSP South Simulcast from the Smyrna area. With the SDS100 and the Remtronix 700/800 mhz antenna for the SDS100, I continue to pick up the same sites from the State of Delaware and NJSP, and I am now able to pick-up distant sites from FIRST in Maryland and the Chester County system. I'm not an expert on the SDS series performance with outdoor antennas, but the SDS series has improved performance in the 700/800 mhz bands for me.