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Amateur Radio Repeater • 70cm
N1DHS — 448.35000 MHz
Mount Lemmon (Catalina Mtns) • Pima County, Arizona • Grid DM42ok
RF Coverage & Terrain Viewshed
Estimated 60 mi coverage footprint • Click anywhere on map to calculate terrain cross-section
Technical Parameters
| Downlink (Listen / RX) | 448.35000 MHz |
|---|---|
| Uplink (Transmit / TX) | 443.35000 MHz |
| Offset / Shift | -5.000 MHz |
| Uplink Tone (TX Access) | 107.2 Hz |
| Downlink Squelch (RX) | Carrier Squelch (Open RX / Tone Optional) |
| Mode & Bandwidth | DMR (Digital) • 70cm |
| Maidenhead Grid | DM42ok |
| Coordinates | 32.44310° N, -110.78830° W |
| Ground Elevation | ~9,157 ft AMSL |
| RepeaterBook Radius | 60 miles nominal |
| Linked System | ARCA Coordinated (N1DHS) |
| Sponsor / Trustee | Trustee (N1DHS) |
| Coordination | ARCA |
| Official Website | https://www.azfreqcoord.org/ |
Propagation & Line-of-Sight
Terrain & Elevation
Mount Lemmon (Catalina Mtns) Ground Profiling
Situated at ~9,157 ft AMSL in Pima County (Maidenhead Grid DM42ok). 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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