Amateur Radio Callsigns in ZIP Code: 78663
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| WA1HFB | SHAW, HAROLD C | Round Mountain | TX | United States |
| KE5RPR | Megna, Michael J | ROUND MOUNTAIN | TX | United States |
| KF5DRO | Buckley, John S | Cypress Mill | TX | United States |
| KF5IWI | Buckley, Carolyn S | CYPRESS MILL | TX | United States |
| KG5IYW | Fagg, Jacob M | Round Mountain | TX | United States |