| Callsign |
Name |
City |
State |
Country |
| K3FEB |
Block III, Frank E |
Silver Spring |
MD |
United States |
| W3FDA |
FDA AMATEUR RADIO CLUB |
Silver Spring |
MD |
United States |
| W3PHS |
FDA Amateur Radio Club |
Silver Spring |
MD |
United States |
| AC3JU |
Xu, Alex |
Silver Spring |
MD |
United States |
