The rubidium clock failures on IRNSS-1A were a critical setback, but they taught ISRO a vital lesson in self-reliance. We developed our own, more robust atomic clocks for subsequent NavIC satellites. Replacing one now? The cost is not just in crores for the hardware—it's in the priceless strategic autonomy secured. You see, when my former students, now building those very systems, visit, their pride in a truly 'swadeshi' solution reminds me that the cost of a classroom mistake is nothing compared to the cost of depending on others.
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