This forum is dedicated to discussions pertaining specifically to the Motorola ASTRO line of radios (those that use VSELP/IMBE/AMBE), including using digital modulation, digital programming, FlashPort upgrades, etc. If you have general questions please use the General or Programming forums.
They have already switched back to the 506 channels, but are simulcasting on some of the 484 channels. The other 484 channels that were replaced by the 506 channels are now being used for tactical channels within the different bureaus.