Good signal on my grabber:
https://klubnl.pl/wpr/en/index.php/klubnl-pl-grabbers/grabber-4-8270hz/
What is the antenna orientation?
jacek
On Sat, 29 Dec 2018, DK7FC wrote:
Date: Sat, 29 Dec 2018 13:43:14 +0100
From: DK7FC <[email protected]>
Reply-To: [email protected]
To: [email protected]
Subject: LF: VLF Carrier on 8270.01 Hz from a ground loop antenna - The 6th
station on Paul's spectrogram
Hi VLF friends,
Since 11:35 UTC i'm running about 2.5 A antenna current into my 900m long
ground loop antenna. Frequency is 8270.01 Hz. The signal is very strong on my
own grabber in 57.6 km distance but also at DF6NM, DL0AO and it looks like
there is a peak now on Paul's spectrogram building up slowly.
I intend to run the carrier for 2 hours or so, until the accu is almost empty
:-)
The H bridge PA voltage is 175 V and the power consumption is 450 W.
Today, the DC measuremant result is 66V for 1 A antenna current. It is cold
and wet!
More soon.
73 de DK7FC/P in JN39WI
PS: The QRN is exceptional low!!!!
grabber_sq5bpf_8270_avg_fc.png
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grabber_sq5bpf_8270_fc.png
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