I'm updating an SDS100 for my mom that may be having technical problems (this unit has been sent back to Uniden multiple times already), and I'm trying to fully understand the traffic in Yellowstone county. My understanding is that because the different sites in Yellowstone county are all using different frequencies, they're not a simulcast system. Can someone confirm that for me? If my understanding is correct, she wouldn't necessarily need an SDS and would get very similar performance from a BCD436HP or a Homepatrol-2. Is that correct? TIA