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![]() Fire agencies have retained their VHF frequencies, which are multicast on STARCOM21 talkgroups. Your choice of earpieces, headsets or speaker-microphones to enable high quality audio under adverse conditions. DuPage public safety agencies (excluding Naperville departments) operate primarily on Site 101 of STARCOM21, internally referred to as the DuPage Emergency Dispatch Interoperable Radio System (DEDIRS).
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