Lately I've been hearing a strong signal on 10126kHz, letters N and A in Morse code. It sounds as if it is the old aircraft nav system where if you are on one side of the transmit antenna array you hear Morse 'N' (-.) and on the other side you hear the complementary letter, 'A' (.-). Any body else hear it? I tried a search on this website and google, but could not find anything.