Persons have always assumed the origins of 5x5 are military in nature. That is indeed the case. On a communications scale over radio a perfect signal is rated a five, all degrees lesser being 4x5, 3x5 etc. until reaching zero which of course cannot be transmitted due to no reception is now available.
But where does the scale come from? In truth its also military and interesting in itself.
Before the advent of computers transmission of voice was simply done द्वारा radio, but transmission of "text" items was done द्वारा a teletypewriter device. In order for information not to have to be retyped every...
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