SAQ Grimeton: RF wideband recording from 100 years anniversary of the inauguration of the Grimeton radio station available.
In the COHIRADIA archive there is a new AM-wideband recording from 2025-07-02, containing the signal from SAQ Grimeton on 17.2 kHz while airing a special message during its 100 years celebration of the inauguration in 1925 (full story see here). The signal was recorded in the outskirts of Graz (AT) and extends from 10 – 260 kHz. It contains, in addition to VLF, the LW band including several LW broadcasting stations. The SNR of SAQ is good, reaching approx. 25dB.
The IQ file can be downloaded freely and played back with software for software defined radios (e.g. SDRUno, HDSDR, SDR#, …) but also on analogue equipment when using the hardware/software platform supported by COHIRADIA.
Footnote: The files, though having the extension ‘wav’, are no audio files and thus cannot be played back with standard audio players. Use SDRUno, SDR#, SDR-Angel, HDSDR or similar tools.
Hermann Scharfetter (2025-07-03)