Amateur Radio Callsigns in ZIP Code: 30042
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| WX4NET | Gwinnett County ARES | Lawrenceville | GA | United States |
| KK4FGI | GWINNETT COUNTY ARES | Lawrenceville | GA | United States |
| KK4FGJ | GWINNETT COUNTY ARES | Lawrenceville | GA | United States |
| KK4FGK | GWINNETT COUNTY ARES | Lawrenceville | GA | United States |
| KK4FGL | GWINNETT COUNTY ARES | Lawrenceville | GA | United States |
| KO4BTL | CLARKE, DARREN E | LAWRENCEVILLE | GA | United States |