Madison PD
They use the conventional repeater (not simplex) for their main dispatch channel. To hear it, you only have to program the output frequency in your scanner.
They also use talkgroups on the Huntsville Public Safety Trunked System (TRS) for checking records, "channel 2", "common", etc... To hear those talkgroups, you have to program your scanner for the Huntsville TRS.
Hope that helps.
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