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The effort of a nation’s scientific community devoted to getting one broadcast from there to here. Pre-enshitification era. Vs One cell phone out of billions losing signal for a moment at a Wal Mart, in an industry ruthlessly focused on cost cutting. Everything enshitified. Did I do it?
Your phone uses short wave radio (~gigahertz frequencies that are very easily blocked by dense material like concrete, metal..and also interfered with by free floating particles). What’s your Walmart made of?… Apollo mission used high powered directional antennae’s on both earth and the spacecraft. With a completely unobstructed line of sight between them. They had satellite dishes more than 60m across to catch signal from spacecraft. They used narrow beam radio signal pointed directly at its target. It means far far far far less margin for error than your mobile phone, who’s signal can bounce off objects and particles (hence you don’t always need to have direct line of sight with the cell tower). But it meant that Apollo could send a stronger signal and have greater sensitivity to signals because narrow beam is so much more efficient (as long as it hits the target). An easier analogy would be - your phone is a walkie talkie in a metal box, Apollo had a laser guided radio link across open space.