![18_1_khz 18_1_khz](http://hambrew.net/blog/wp-content/uploads/2009/07/18_1_khz.png)
This my vlf antenna, yes it is a deguass coil from an old tv, an tl-074 as instrument amp and BPF ~400 Hz - ~100 KHz
![](http://hambrew.net/blog/wp-content/uploads/2009/07/p-1600-1200-ebb6ab3a-a1dc-44b5-981e-8cb902fc90a6.jpeg)
Above is the instrument amplifier and BPF.
![](http://hambrew.net/blog/wp-content/uploads/2009/07/p-1600-1200-828730fb-11ca-4127-8333-5ab7aaf02026.jpeg)
The thin black line is a demagnitising coil from an old TV, the picture is taking looking straight south
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ReplyDeleteCoolness. Is glfer running native on FreeBSD, with Linux emulation, or on a Linux box? I take it that your antenna and circuitry goes into your soundcard.
ReplyDeleteYes it is glfer running native on FreeBSD, though i have not yet committed it to the ports tree.
ReplyDeleteYes it is coil antenna, instrmument amplifier + amp (including a BPF) then into the mic in. The circuitry is supplied with a 9V battery
SpecLab 2.7 seems to work fairly well with Wine on freebsd, too.
ReplyDelete