Using Win500, I search RadioReference for my county's (Douglas, NE) Trunked Systems. Upon finding it, I check all the Sites and all the Talkgroups. This is too many and I get an error message. I understand that I need to download at least one Site or my Talkgroups won't be assigned a TSYS when downloaded to my scanner. But which one do I download? I wouldn't think it would be any random Site. But I can't figure out how to match the Talkgroups to a Site. There is nothing in the descriptions to help me. Any help would be appreciated. Thanks.