Message-ID: <5A19FF75.7080801@posteo.de>
Date: Sun, 26 Nov 2017 00:40:37 +0100
From: DK7FC <selberdenken@posteo.de>
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To: rsgb_lf_group@blacksheep.org
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Subject: VLF: DK7FC close to SAQ
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Hi VLF,

Since 23 UTC a 700 mA carrier is running on *17.4701 kHz*!

It is a little surprise to the VLF community i think ;-)

Legal? Yes: 
http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sonderlizenz.jpg
Actually the document has 3 pages but the other ones are no so relevant.
My ERP is limited to 5 mW. I did not request more because more isn't 
possible anyway with this antenna.

I wound a big single layer coil with 0.5 mm enameled wire on a PVC tube 
with 315 mm outher diameter.

0.7 A is just a first careful step. The coil is designed to hold 1.5 A 
'key down'.

The carrier will run the whole night and even tomorrow at daytime.

Worldwide reports are welcome ;-)

It is not sub-9-kHz but still VLF, the 17 km band!! So give it chance :-)

The tree has still some solar power to stream the signal from the EW 
loop down to the city, so there is a feedback spectrogram at
http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html


73, Stefan

PS: I still can hear that tone of the coil. It is terrible! Be happy 
when you are older than me!

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Hi VLF, <br>
<br>
Since 23 UTC a 700 mA carrier is running on <big><b>17.4701 kHz</b></big>!<br>
<br>
It is a little surprise to the VLF community i think ;-)<br>
<br>
Legal? Yes:
<a class="moz-txt-link-freetext" href="http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sonderlizenz.jpg">http://www.iup.uni-heidelberg.de/schaefer_vlf/VLF/17,47kHz_Sonderlizenz.jpg</a><br>
Actually the document has 3 pages but the other ones are no so
relevant. <br>
My ERP is limited to 5 mW. I did not request more because more isn't
possible anyway with this antenna.<br>
<br>
I wound a big single layer coil with 0.5 mm enameled wire on a PVC tube
with 315 mm outher diameter.<br>
<br>
0.7 A is just a first careful step. The coil is designed to hold 1.5 A
'key down'.<br>
<br>
The carrier will run the whole night and even tomorrow at daytime.<br>
<br>
Worldwide reports are welcome ;-)<br>
<br>
It is not sub-9-kHz but still VLF, the 17 km band!! So give it chance
:-)<br>
<br>
The tree has still some solar power to stream the signal from the EW
loop down to the city, so there is a feedback spectrogram at<br>
<a class="moz-txt-link-freetext" href="http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html">http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber2.html</a><br>
<br>
<br>
73, Stefan<br>
<br>
PS: I still can hear that tone of the coil. It is terrible! Be happy
when you are older than me!<br>
</body>
</html>

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