Amateur Radio Callsigns in ZIP Code: 20143
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| W4ZB | Richter, Paul S | CATHARPIN | VA | United States |
| KG4MGB | Beadner, David L | Catharpin | VA | United States |
| W4AEV | FOWLER JR, SAMUEL H | CATHARPIN | VA | United States |
| AK4PK | Waller, Richard W | Catharpin | VA | United States |
| KK4FYX | Waller, Beth A | Catharpin | VA | United States |
| KK4MXY | Diamond, Lillian L | Catharpin | VA | United States |
| KM4HUF | Horton, Jeremy G | Catharpin | VA | United States |