Wilfried Fritz DJ1WF has made a video showing reception of the Swedish Alexanderson Alternator station SAQ on 17.2 kHz.
This videos shows the SAQ signal reception during an extra test transmission on 17.2 kHz on 10th of January 13.30 UTC.
The frontend was a homebrew VLF-converter with an integrated active antenna. The active antenna section consists of a telescopic rod antenna followed by a dual gate FET preamplifier. The mixer section was made with a dual gate FET, too. The converted signal (4,0172MHz) was processed by an amateur radio transceiver Icom IC706 connected to the converter's output socket.
The signal was so strong again that it could be picked up with the collapsed telescopic antenna (8cm length). During the video the antenna was extended to a total lenth of 46cm, and the signal became much louder. It was amazing to hear the signal with such a short antenna so clearly.
Watch SAQ ( Grimeton ) reception on 10th of Jan. 2012 13.30 UTC
