IFR for 100
You are getting ready to depart from KFNL (Fort Collins Loveland), a non-towered airport, under IFR conditions. You happen to glance down at the IFR enroute chart for the area and notice the callout box "Denver 122.4". Who is it you would be calling and how would you address them if you transmitted on 122.4?

You would be calling Flight Service, and you would address them as "Denver Radio"
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