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Dec 14: Radio Wargame
Challenge
The quieter you become, the more you are able to hear
A UK football fan transmits chants and hopes the gods of football pick it up and consider his favorite, Manchester, to win the cup.
Santa, while using his ham radio station to receive wish-lists from earth, picked it up and saved a copy for his data lake. Can you help Santa to make sense of the signals?
Solution
We open the file in audacity:
and manually decode using Manchester encoding (as indicated by challenge description)
1
01001000 01010110 00110001 00110110 00101101 00110001 00110011 00110011 00110111 00101101 01010010 01100001 01100100 01101001 00101101 01101111 01010111 01100001 01110010 00101101 01100111 01100001 01101101 01100101 00101101 00110001 00110011 00110011 00110111
This gives us the nugget when converted to ascii
Flag
HV16-1337-Radi-oWar-game-1337