Due to the initial antenna connection problem, I missed the tuning-up, but most of today's SAQ is here. A strong, ~S7 signal today, with a clear signal from the carrier during key-up times.
Frequency control was excellent today, well within the design +/-10Hz. Given it's an electromechanically-regulated spinning metal disc, this is always pretty amazing!
24 December 2025: The Very Low Frequency (VLF) transmitter from Grimeton (Sweden) with the call sign SAQ goes on air. Is it possible to receive this transmitter with simple means in the city of Bern? Yes, it is possible.
Antenna: (DIY) three ferrite rods wound with HF litz wire.
DIY up-converter.
Degen DE1103 receiver.
The signal was weak, but it was still possible to copy it.
Cold War VLF and a Bob’s Homemade “LWL” QSL Card
https://swling.com/blog/2025/12/cold-war-vlf-and-a-bobs-homemade-lwl-qsl-card/
Tonight I'll play a new work, Radio Strata in Esc Gallery - Graz.
It is a journey in radio recordings I've made, from cosmic sources towards Earth, passing through satellites.
Come for the ending of the "Out of Control" exhibition! More infos here:
https://esc.mur.at/en/projekt/out-control
(Big thx to @reni )
Pasirodo neblogas imtuvas gavosi.
SAQ 17.2 kHz
3 alpha beacons 11.905 kHz, 12.649 kHz, 14.9 kHz;
FSK signalas ~21.1 kHz
RDL 18.2 kHz
Software SDR++
Receiver: Cheap USB audio interface su MIC In
Antenna: 20m Dipole (2 laidai po 5 metrus)
MW1CFN
sperber64
Jeremy
Vilius
SWLing Post
Arnie the DXman
Nicolas Montgermont
Patrick ON4CDJ