% Author: Prof. Dr. Matthias Jung, DL9MJ
% Year: 2026
\begin{circuitikz}
    \draw[thick, DARCred] (0,0)
        sin ++(4, 3)
        cos ++(4,-3);
    \draw[thick, DARCblue] (0,0)
        sin ++(2,+1.5)
        cos ++(2,-1.5) 
        sin ++(2,+1.5)
        cos ++(2,-1.5);
    \draw[thick, DARCgreen] (0,0) sin ++(1,+0.75)
        cos ++(1,-0.75) 
        sin ++(1,+0.75)
        cos ++(1,-0.75)
        sin ++(1,+0.75)                            
        cos ++(1,-0.75)
        sin ++(1,+0.75)
        cos ++(1,-0.75);
    \draw[thick, DARCorange] (0,0) sin ++(0.5,+0.35)
        cos ++(0.5,-0.35) 
        sin ++(0.5,+0.35)
        cos ++(0.5,-0.35)
        sin ++(0.5,+0.35)                            
        cos ++(0.5,-0.35)
        sin ++(0.5,+0.35)
        cos ++(0.5,-0.35)
        sin ++(0.5,+0.35)
        cos ++(0.5,-0.35) 
        sin ++(0.5,+0.35)
        cos ++(0.5,-0.35)
        sin ++(0.5,+0.35)                            
        cos ++(0.5,-0.35)
        sin ++(0.5,+0.35)
        cos ++(0.5,-0.35);

    \draw[very thick] (0,0) coordinate(start)
        to [short] ++( 3.9,   0)
        to [short] ++(   0,-0.8);
    \draw[very thick] (8,0) coordinate(end)
        to [short] ++(-3.9,   0)
        to [short] ++(   0,-0.8);

    \node[DARCred, anchor=south west] at (6,{3/sqrt(2)}) {\qty{3.5}{\mega\hertz}};
    \node[DARCblue, anchor=south west] at (3,{1.5/sqrt(2)}) {\qty{7}{\mega\hertz}};
    \node[DARCgreen, anchor=south west] at (1.5,{0.75/sqrt(2)}) {\qty{14}{\mega\hertz}};
    \node[DARCorange, anchor=north] at (1,0) {\qty{28}{\mega\hertz}};

    \DARCmeasure{start}{end}{0,-1}{0}{$\qty{40}{\meter}$}
\end{circuitikz}