The National Zoo is using the DC Area Fed SMR IDAS system. This system has replaced the PassPort system. The zoo was found to be using at least five frequencies. (Only two were noted in use when the PassPort system was active.) The increased number of frequencies is probably due to all personnel at the zoo using the system. Previously, only police, maintenance, and keepers were using the trunked system. Parking, guest services, concessions, and others were using UHF business frequencies.
Unfortunately, it appears all communications are encrypted.
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