Starlink and Iridium Redundancy, Build a Communications Plan That Survives Bad Days

People love buying a shiny primary system. They are less excited about planning for the day it stops being primary.

A sensible communications plan uses layers. Starlink may carry most traffic. Iridium may carry emergency messaging and weather. VHF still matters locally. None of it matters if the power plan is weak.

Build the stack around failure modes, not convenience. What happens if the high-draw gear goes offline overnight? What happens if you need weather while preserving battery? What happens if a connector corrodes during passage?

The goal is not luxury. The goal is graceful degradation, so bad conditions stay inconvenient instead of dangerous.