Amateur Radio Callsigns in ZIP Code: 78575
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KE5TRG | Bogorad, Geoffrey M | RANCHO VIEJO | TX | United States |
| KF5SEL | Johnson, Bianca | Rancho Viejo | TX | United States |
| KG5BIO | Lippa, Mark A | Rancho Viejo | TX | United States |
| KI5KIN | SKAINES, DANIEL J | OLMITO | TX | United States |
| KG5PAR | OLIVAREZ IV, ANTONIO | Olmito | TX | United States |
| N5CHP | BREIER, JOHN A | RANCHO VIEJO | TX | United States |