Colour Directional Spectrograms, received by DF6NM in JN59NK - tnx DL4YHF for Spectrum Lab

Fullband View (135.6 - 138.2 kHz)

Scales: 5 Hz/pix (0.68 Hz FFT) - 1 s/pix - linear, fullscale 2 µV/m (unless indicated otherwise) - update every 5 min

Transatlantic Waterhole (137775.4 - 137781.4 Hz)

Scales: 21 mHz/pix - 10 s/pix - linear, fullscale 0.5 µV/m

European Transmit Window (136315.8 - 136320.6 Hz)

Scales: 28 mHz/pix - 10 s/pix - linear, fullscale 0.5 µV/m

Colour Direction Finder Description - Loran-C Live Grabber - DF6NM Homepage