MF WSPR Sub-Band

LF 137KHz Opera32 Sub-Band

Alicante NDB "AI"

DC-25KHz Wide Spectrogram

Russian Alpha 11904.7619 Hz

VLF 36Km 8270Hz "Dreamers Band"

17200Hz SAQ Alexanderson Alternator

145KHz Guardamar Tower

Last update 6 February 2022