Amateur Radio Callsigns in ZIP Code: 92781
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| N6MVF | KOSAKURA, STEVEN T | TUSTIN | CA | United States |
| W6CAO | Oberlin, Craig A | Tustin | CA | United States |
| W6NGO | Orange County Amateur Radio Club Inc | Tustin | CA | United States |
| KM6ZPO | Warrick, Mark D | Tustin | CA | United States |
| KN6LCR | Chen, David | Tustin | CA | United States |
| KO6DSL | Grossman, Nicholas | Tustin | CA | United States |