FCC Historical Auction Date is one of the best sources of comparable transaction data for spectrum purchased from the FCC. SpecEx membership provides members with access to its proprietary Historical Auction Data Analysis Tool which makes the job of filtering and analyzing thousands of FCC records fast, easy and efficient. Simply select one or more of the “Auctions” displayed by the tool and it automatically reduces subsequent data fields to only the relevant selections. To select more than one field, hold the “Ctrl” button down.