Current average strength DCF39 138.8305 kHz and noise in 1 Hz - anything above -40 could mean path open on 137 kHz to Europe over pole

8270 Hz region VLF

Wideband VLF

Wideband VLF signal plots

Schumanns etc

Whistlers etc

Live 137 kHz West/East

Live 137 kHz on L1 Lake wire