Hello Markus and Paul, group,
That's a much better explaination than Doppler shift. What would cause a
180 degree phase shift? Is there an XOR gate in the sky.
A few more dB will depend on getting some plastic machined. Hopefully
this will be before the end of winter.
The TX is off since ~10ut due to lightning in the forecast.
73
Joe VO1NA
On Tue, 11 Sep 2018, Markus Vester wrote:
That continuous trace on Paul's spectrogram is impressive - great work!
Attempting to extract a long spectrum from Paul's data creates a split peak at
+-12 uHz from the center, suggesting a repeating near 180° phase difference
between day and night.
A close look on our Bavarian 31 uHz spectrograms seems to bring up some faint
traces on the right frequency, but to be more sure we still need a few dB less
noise, or more ERP.
Best 73,
Markus (DF6NM)
-----Ursprüngliche Mitteilung-----
Von: jcraig <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Mo, 10. Sept 2018 21:33
Betreff: Re: LF: VO1NA 8270.0075 Hz
I've not been mucking with the tx or tuning so perhaps Mother Nature has
provided an ERP improvement -- the wx has been quite dry recently.
Thank-you for the report and the spectrogram service. It keeps me
entertained, especially since it seems impossible to see my own
sigs with a remote setup at distances greater than about 10 km.
Been playing with vt tools and a cheap sound card.
73
Joe VO1NA
On Sun, 9 Sep 2018, Paul Nicholson wrote:
VO1NA from Newfoundland with 10uW must hold the record for
the longest running VLF transmission!
Coming in well the last couple of days -
http://78.46.38.217/fbins3.html#p=1536487200&b=280&s=sp&m=cardioid&w=r&h=62&z1=0.34&z2=0.64&c=1
An ERP improvement, or good propagation?
--
Paul Nicholson
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