Joe VO1NA wrote:

> Testing the coil amp and dds ... [24th]
> 8 uW.

> Off at ~1600 utc today. [27th]


 http://abelian.org/vlf/tmp/170828a.gif

That's two daytime signals, 25th and 26th 10:00 to 20:00,
combined coherently, bin width is 27.8 uHz.

S/N of the combined days is 16.0 dB.

Adding the two days non-coherently gives only 9 dB.

I couldn't get anything useful out of the nighttime signal.

I'll be glad when you get a GPS locked carrier, it's a bit
tricky coherently combining recordings when the frequency is
not known!

--
Paul Nicholson
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