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SAQ 17.2 kHz Christmas Eve Transmission
I was finally able to capture and listen to SAQ this morning. I used the KiwiSDR and a new 350 foot beverage antenna. I have been trying to receive this station since 1981.
![](http://forum.kiwisdr.com/uploads/editor/8x/6oolt7ahcfjg.png)
Thanks to Jim Lill WA2ZKD and Rob Robinett AI6VN for getting me enthused enough with KiwiWSPR to put up the new antenna.
Steve KD2OM
![](http://forum.kiwisdr.com/uploads/editor/8x/6oolt7ahcfjg.png)
Thanks to Jim Lill WA2ZKD and Rob Robinett AI6VN for getting me enthused enough with KiwiWSPR to put up the new antenna.
Steve KD2OM
Comments
Regards
Mauritz / SM2BYC
If you or others on this forum ever have a chance to visit Grimeton (near Varberg and Göteborg), do it! I had a wonderful visit and tour hosted by Lars (World Heritage site manager there) a couple of years ago and truly enjoyed it. It's a rather long trip for you though, 113 Swedish miles, 1125 km !
I couldn't actually hear it on a 1.8m dipole, 1.5m above ground here in Colorado but I could barely see it in the waterfall. However I was very happy to be able to use a Kiwi at SK6AG who heard it *very* well. The waterfall display showed the spectral line width to be significant most of the time, several 10's of Hz during the message, which made it a bit harder to see from locations where it was very weak, such as the western US. But it was 'seen' (not heard by ear) on a Kiwi in California. W0BC in central Colorado reported hearing it part of the time. I guess I need to work some more on the VLF antennas for the Kiwi here!
Pretty amazing for rotating machinery that is more than a century old.
Best,
Glenn n6gn
Fort Collins, CO
Glenn n6gn
Glenn n6gn
this works good as a baseband I/Q for VLF down to audible frequencies. (if your software can support frequencies that low)
>has anyone attempted to use their PC soundcard microphone input connected to their antenna
>
Yes I have tried receiving several VLF stations using just a PC soundcard.
There is a some very simple receiver software, primarily designed for SAQ transmissions
https://sites.google.com/site/swljo30tb/home/files
But other more sophisticated applications such as spectrum lab have a preset VLF receiver mode.
https://www.qsl.net/dl4yhf/spectra1.html
Mains hum, ground loops and noise pickup from the PC data lines are the main issues when using a sound card.
I got the best results using an Icon Cube Pro USB soundcard 4ch with 196KHz sampling on a USB extender cable. But I find that unless you are really interested in extremely low level sub 10KHz signals the KiWi does a pretty good job.
Regards,
Martin - G8JNJ