The lesson
Hong Kong airport SIM. Seward out-of-cell ditch. E1 is not about charging your phone. It's about whether anyone knows you're there.
What this module forces
E1 has three sub-systems: signal (satellite, cell, SIM strategy), power (solar, battery, charging chain), and communications (who has your itinerary and when they escalate).
The questions this module asks
Do you carry a satellite messenger with a live SOS plan?
Do you have a power chain that survives 3 cloudy days?
Is there a nominated contact with your itinerary and an escalation trigger?
For international legs, do you have a working data plan on arrival?
The verdict
Green
Sat + solar + power bank + nominated contact + working data.
Amber
One of the four is thin.
Red
Cell-only, no nominated contact, or power chain that can't hold 3 days.
Ready to run every module against your plan?
Open the Expedition Planner