Back to Directory
Amateur Radio Repeater • 70cm
AK7Z* — 446.42500 MHz
Tumamoc Hill • Pima County, Arizona • Grid DM42mf
70cm FM On-Air (ARCA Coordinated) CSQ (Carrier Squelch / Open) -5.000 MHz Shift
RepeaterBook
Club Website
RF Coverage & Terrain Viewshed
Estimated 35 mi coverage footprint • Click anywhere on map to calculate terrain cross-section
Technical Parameters
| Downlink (Listen / RX) | 446.42500 MHz |
|---|---|
| Uplink (Transmit / TX) | 441.42500 MHz |
| Offset / Shift | -5.000 MHz |
| Uplink Tone (TX Access) | CSQ (Carrier Squelch / Open) |
| Downlink Squelch (RX) | Carrier Squelch (Open RX / Tone Optional) |
| Mode & Bandwidth | FM (Analog) • 70cm |
| Maidenhead Grid | DM42mf |
| Coordinates | 32.21800° N, -110.99900° W |
| Ground Elevation | ~3,100 ft AMSL |
| RepeaterBook Radius | 35 miles nominal |
| Linked System | Linked Network (CARBA) |
| Sponsor / Trustee | CARBA |
| Coordination | ARCA |
| Official Website | https://www.azfreqcoord.org/ |
Propagation & Line-of-Sight
Terrain & Elevation
Tumamoc Hill Ground Profiling
Situated at ~3,100 ft AMSL in Pima County (Maidenhead Grid DM42mf). Topographic ground elevation can create shadows or knife-edge diffraction across surrounding Arizona mountain ridges. Click anywhere on the map above to inspect real-time optical line of sight.
Launch Terrain LOS ProfilerOfficial Database & Coordination
Live Records on RepeaterBook
Check trustee contact information, travel tones, coordinated status, and community reports directly on RepeaterBook: