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Amateur Radio Repeater • 2m
K7EAR — 147.28000 MHz
Tumamoc Hill • Pima County, Arizona • Grid DM42mf
2m FM On-Air (ARCA Coordinated) 127.3 Hz +0.600 MHz Shift
EAARS: TUCSON_METRO
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) | 147.28000 MHz |
|---|---|
| Uplink (Transmit / TX) | 147.88000 MHz |
| Offset / Shift | +0.600 MHz |
| Uplink Tone (TX Access) | 127.3 Hz |
| Downlink Squelch (RX) | Carrier Squelch (Open RX / Tone Optional) |
| Mode & Bandwidth | FM (Analog) • 2m |
| Maidenhead Grid | DM42mf |
| Coordinates | 32.21800° N, -110.99900° W |
| Ground Elevation | ~3,100 ft AMSL |
| RepeaterBook Radius | 35 miles nominal |
| Linked System | EAARS Statewide Network (Tucson Metro) |
| Sponsor / Trustee | Eastern Arizona Amateur Radio Society |
| Coordination | ARCA |
| EAARS Site Code | EAARS: TUCSON_METRO |
| Network & Inter-Tie | Odd Split: Input 146.260 MHz · PL 127.3 Hz (Tucson Metro) |
| Official Website | https://www.eaars.com/eaars-network/ |
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
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