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Phoenix / Arizona

Phoenix / Arizona

Geographic Context

The Phoenix metro - the Valley of the Sun - is flat desert terrain sitting at roughly 1,100 ft elevation. The surrounding mountain ranges provide ideal elevated repeater sites:

  • South Mountain Park (2,690 ft) - south of the metro, with extensive line of sight across the entire valley floor.
  • McDowell Mountains - northeast of Scottsdale, covering the northeast valley.
  • White Tank Mountains - west of the metro, covering the west valley.
  • Superstition Mountains - east, near Apache Junction, covering the east metro and extending toward the Tonto National Forest.

Network Status

Active Meshtastic community with a mix of private and public channel nodes. The flat terrain means that elevated repeaters on the surrounding mountains can cover vast distances - South Mountain in particular provides line of sight across most of the Phoenix metro from a single site.

Preset

Long Fast is commonly used. With relatively lower node density compared to coastal metros, Long Fast remains practical and is the community standard in Phoenix.

Terrain Advantage

The flat desert floor provides excellent RF propagation between elevated sites and ground-level nodes. Ground-level nodes still have reasonable range in the absence of obstructions. A handful of well-placed mountain-top repeaters can bridge the entire metro-wide mesh effectively - a significant operational advantage compared to hilly or forested environments.

Summer Heat Considerations

Phoenix summers regularly exceed 45°C (113°F) ambient. Electronics in enclosures without ventilation can reach 70 - 80°C in direct sun. Design permanent outdoor installations with:

  • Shade structures or white/reflective enclosures
  • Passive or active ventilation
  • Batteries rated for high-temperature operation - LiFePO4 chemistry handles heat significantly better than LiPo
  • Thermal testing before final deployment

Seasonal Deployment Notes

  • Winter / Spring - mild temperatures are ideal for solar-powered repeater deployment and site work.
  • Monsoon Season (July - September) - brings lightning risk. Lightning protection is important for permanent installs: install surge arrestors on all antenna feed lines and ensure proper grounding at the mast and enclosure. Coaxial lightning arrestors rated for your frequency and a proper ground rod are minimum requirements.

Community

Arizona ARES chapters use mesh networking in EmComm exercises. The Phoenix Meshtastic community maintains node maps and a Discord server - check the Discord for current active channels, node density maps, and repeater locations.

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