Amateur Radio Callsigns in ZIP Code: 91921
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KI6GRO | Curtis, Frederick G | Chula Vista | CA | United States |
| KJ6BFS | Matterson, Cheryl L | CHULA VISTA | CA | United States |
| KJ6BFT | Matterson, Margaret J | CHULA VISTA | CA | United States |
| KJ6GOO | Matterson, Heather | CHULA VISTA | CA | United States |
| KK6QWD | d'Oleire, Hans | Chula Vista | CA | United States |
| KN6EJP | Crescini, Patrick S | Chula Vista | CA | United States |
| KN6TRD | Udan, Jason P | Chula Vista | CA | United States |
| KO6DGG | Eribez, Adrian R | CHULA VISTA | CA | United States |