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Re: LF: VLF/ULF activity weekend 21th/22th

To: [email protected]
Subject: Re: LF: VLF/ULF activity weekend 21th/22th
From: Paul Nicholson <[email protected]>
Date: Mon, 23 Jan 2017 17:52:17 +0000
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Stefan wrote:

> Maybe it is worth to check if you can extract a peak
> from your E field antenna only?

I've tried E-field only, and H-field only in various
combinations of linear and circular polarisation.

The sferic blanker is working quite well I think.

Still no trace of the signal here.  But tweaking the blanker
isn't going to go from 'no trace' to 'significant detection'.

> What do YOU need to get a first trace of my signal in the UK?

Perhaps I need to move 1/2 wavelength nearer or further?  Maybe
the sky wave and ground wave are just nicely cancelling out?

> Would you do the decode work for me if i try to leave my
> call over 3 wavelengths on ULF?

Sure.  Your chosen settings look OK so long as the signal
at Bielefeld is as good as the 21st.  It doesn't seem very
repeatable, Friday 20th signal was not so good - 6dB weaker
and with a large phase difference too.  162 degrees on 20th
and 63 degrees on 21st.  But on 20th there were three occasions
when the Bielefeld timestamp stepped backwards by one sample,
which adds up to the extra 100 degrees.  Probably accounts
for the 6dB loss too.

So give the 5 chars a try.  If there are not too many timing
glitches I can probably adjust for them.

Paul Nicholson

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