| Radio Reference San Antonio Frequencies | Amateur Radio Callsign Database |
| ARISS program | Amateur Radio on the International Space Station (ARISS) |
| VHF/UHF Fusion Repeaters |
San Antonio Digital Radio Club (sadrc.net) |
An ARRL Affiliated Club
An ARRL Affiliated Club
| Radio Reference San Antonio Frequencies | Amateur Radio Callsign Database |
| ARISS program | Amateur Radio on the International Space Station (ARISS) |
| VHF/UHF Fusion Repeaters |
San Antonio Digital Radio Club (sadrc.net) |