Loran-C sidebands on 137 kHz

Loran pulses observed simultaneously on 100 kHz (left trace in each pair) and 137kHz (right trace)	Spectrogram

Horizontal time scales for Loran: 1.09 ms span around expected arrival (22050 samples/s for 100 kHz), 4.35 ms span (5513 samples/s) for 137 kHz
Horizontal scale for 137 kHz colour-DF spectrogram: 25 Hz/pixel
Vertical time scale: 2006 Mar 18, 15:57 (bottom) to Mar 19, 16:43 (top), 5 minutes/pixel with hour ticks

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