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Amateur Radio Repeater • 70cm
W7MOT — 443.05000 MHz
South Mountain Antenna Farm • Maricopa County, Arizona • Grid DM33xi
RF Coverage & Terrain Viewshed
Estimated 35 mi coverage footprint • Click anywhere on map to calculate terrain cross-section
Technical Parameters
| Downlink (Listen / RX) | 443.05000 MHz |
|---|---|
| Uplink (Transmit / TX) | 448.05000 MHz |
| Offset / Shift | +5.000 MHz |
| Uplink Tone (TX Access) | 100.0 Hz |
| Downlink Squelch (RX) | Carrier Squelch (Open RX / Tone Optional) |
| Mode & Bandwidth | FM Voice Repeater • 70cm |
| Maidenhead Grid | DM33xi |
| Coordinates | 33.33400° N, -112.06400° W |
| Ground Elevation | ~2,690 ft AMSL |
| RepeaterBook Radius | 35 miles nominal |
| Linked System | MARCA South Mountain Flagship Repeater |
| Sponsor / Trustee | Motorola Amateur Radio Club of Arizona (MARCA) |
| Coordination | ARCA |
| MARCA Call ID | W7MOT-24 (South Mountain) |
| Network & Inter-Tie | Control-Linked to 927.2125 · Wkly Tue MARCA Net 20:00 · Skywarn · MCDEM |
| Official Website | https://www.w7mot.org/index.php/repeaters/by-qth |
Propagation & Line-of-Sight
Terrain & Elevation
South Mountain Antenna Farm Ground Profiling
Situated at ~2,690 ft AMSL in Maricopa County (Maidenhead Grid DM33xi). 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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