INTRO TO MODERN OFF-GRID COMMUNICATIONS CLASS + Stay connected & informed without cell service or wifi Saturday, July 26, 2025 | 9:30am -3:30pm El Cajon, California     Communicate Without Cell, Wi-Fi, or Satellite Most people think communication requires cell towers, Wi-Fi, or satellites. But when those systems fail—or you choose not to rely on them—you need a better way. […]