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Radio Waves

by Ed Poznysz

The pictured circuit has a 0.6354 µF capacitor and a 0.000004 µH inductor. Using the standard formula for resonant frequency yields 99.9Mhz.The photographs are taken from one general vantage point in Lobby 7. Bringing a radio tuned to 99.9 Mhz to that location allows the solver to pick up a signal from a transmitter positioned above the door in Lobby 7. The signal is a variety of voices saying the solution word: NEEDLEPOINT.