- Sections and slides rewritten in Swedish; German law and institutions replaced by Swedish/CEPT/ITU equivalents (PTS, SSA, PTSFS 2025:1, SSMFS 2008:18), unverified statements marked "% TODO VERIFY" - New toc: INSTEG, HAREC, UPPGRADERING; section idents are Swedish (see ident-map.tsv) - Exam-question tags, BNetzA question pool, solutions and the German SWL course removed - Static pages, snippets, applets, READMEs and image alt-texts translated - TikZ labels translated; SVG drawings regenerated (drawing 689 still fails to build upstream: it references a missing photo) - Changed from the original: not endorsed by DARC e.V., SSA or PTS Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
41 lines
1.5 KiB
TeX
41 lines
1.5 KiB
TeX
% Author: Prof. Dr. Matthias Jung, DL9MJ
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% Year: 2025
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\begin{tikzpicture}
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% Earth:
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\draw[very thick] (0,0) arc (60:120:3);
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%
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\path(0,0) arc (60:110:3) coordinate(tx);
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\path(0,0) arc (60:70:3) coordinate(rx);
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\path(0,0) arc (60:75:3) coordinate(aa);
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\path(0,0) arc (60:90:3) coordinate(mid1);
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% Tropospheric Duct:
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\fill[DARCblue, name path=P1]
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(0,1.2) coordinate(start) arc (60:120:3)
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-- ++(0,+0.05)
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arc (120:60:3) coordinate(c6)
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-- (start);
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\fill[DARCblue, name path=P3]
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(aa) ++(0,0.8) coordinate(start) arc (75:105:3)
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-- ++(0,+0.05)
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arc (105:75:3)
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-- (start);
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% Anchor points top:
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\path (0,1.225) arc (60:120:3)
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node[pos=0.25](top3){}
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node[pos=0.50](top2){}
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node[pos=0.75](top1){};
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% Anchor points bottom:
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\path (aa) ++(0,0.825) arc (75:105:3)
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node[pos=0.25](bottom3){}
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node[pos=0.50](bottom2){}
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node[pos=0.75](bottom1){};
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\draw[DARCred, ultra thick, rounded corners]
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(tx) -- (top1.center) -- (bottom1.center) -- (top2.center) -- (bottom3.center) -- (top3.center) -- (rx);
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\draw(tx) node[antenna,scale=0.25,rotate=+20](ant1){};
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\draw(rx) node[antenna,scale=0.25,rotate=-20](ant2){};
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% Legend:
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\draw[DARCblue](top2.north) node[anchor=south] {Inversionsskikt};
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\draw[DARCblue](bottom2.south) node[anchor=north] {Inversionsskikt};
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\path(top2) -- (bottom2) node[pos=0.5, DARCred](){Duct};
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\end{tikzpicture} |