There are two SECC club circles. One for ARRL sponsored contests and the other for CQ sponsored contests. The SECC club circle center is located at EM83lg, just west of Sparta, Georgia.
You can go to https://contest-clubs.arrl.org/griddistancecalc.php to determine if you are inside the club circle. Enter EM83lg as the reference grid square and your grid square in the text box. If you aren’t inside either circle you are still welcomed to join our Groups.io mailing list group to follow what’s going on in the SECC.
The inner circle on this map is the SECC club circle for ARRL contests which is defined to be 175 miles from the center.
The outer circle on this map is the SECC club circle for CQ contests which is defined to be 250 miles from the center.
Click here to display a map that shows the 175 mile ARRL circle.
Click here to display a map that shows the 250 mile CQ circle.