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The AN-GRR-5 Military Shortwave Radio. (Photo source: Popular Science)
Vin Marshall, of Popular Science, has written a great short article about lessons learned from military surplus radios:
“Military surplus equipment is more than just cheap, weird and green. For me, it’s a design study in what happens when usability and ruggedness are given priority and production cost is forgotten. […] Leaving aside the cost issues, I like to look at these pieces of equipment as a design study: How to build something that will be easy to operate and will continue working in almost any conditions.”