You are trying to find one stationary transmitter located at a named place with a regular transmit cycle of one minute active, three minutes idle. You have three stationary receivers to aid you in your search.
The name of the location is the flag, assuming you're not using Bing Maps.

RDF Receivers:

DF Station Alpha:

DF Station Bravo:

DF Station Charlie:

The easy version of this challenge should be solvable with nothing more than a little bit of patience and a tool such as Google Earth. The named place is on both Google Maps and Open Street Maps. Don't be fooled by this being "easy", you'll still need to do some basic math.