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Re: ULF: EbNaut over 3 wavelengths on ULF

To: [email protected]
Subject: Re: ULF: EbNaut over 3 wavelengths on ULF
From: Paul Nicholson <[email protected]>
Date: Fri, 3 Feb 2017 14:52:32 +0000
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Last week I looked at 54 sferics to make a sanity check
of the antenna at 3kHz.   Here is the average spectrum

Peak is at 8.6 kHz with amplitude 0.11 and the
dip is at 2.5 kHz amplitude 0.012 so about a 20dB

The source of these daytime sferics was about 1200 to
1300 km distant.

Sferic blanking at 8270 usually makes up to 20dB S/N
improvement, but only a few dB at 2970.  There is not
so much sferic energy to remove at the lower frequency.

Paul Nicholson

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