goTenna turns your iPhone or Android into an off-grid communications tool, enabling you to text & share GPS locations on detailed offline maps.

goTenna is lightweight, weather-proof, and easy to use.

goTenna is sold in pairs 2, 4, 6 or more! so you can stay connected to at least one friend (and anyone else using goTenna).Each pair comes with 2 micro-USB charging cables.

goTenna apps and offline maps are free to download. goTenna comes with a 1-year limited warranty.

iPhone & Android app

  • Send & receive messages for free
  • Share locations on detailed offline maps (also for free!)
  • Instantaneous transmission within range
  • 1-to-1 & group messaging
  • Delivery confirmation & message retry (1-to-1 chats only)
  • Shout broadcasts to anyone within range
  • End-to-end encryption (384-bit elliptic curve)
  • Compatible and interoperable with iOS & Android devices
  • Upgradable via firmware & software updates


  • Antenna
  • 2-watt radio
  • Flash memory good for 100s of messages
  • Rechargeable lithium-polymer battery
  • Micro-USB connector
  • Bluetooth-LE data interface
  • Status indicator lights
  • Nylon attachment strap
  • Water-resistant
  • Dust-tight
  • Size: Roughly 5.8 in x 1 in x 0.5 in or 147.3 mm x 25.4 mm x 12.7 mm. When the device extends, its length increases by 2.2 in or 55.8 mm
  • Weight: About 1.8 oz or 52 g
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$300 · goTenna Smartphone Antenna

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