% Author: Dr. Matthias Jung, DL9MJ
% Year: 2020
\begin{circuitikz}
    \ctikzset{
        blocks/scale=\getDarcImageFactor,
        RF/scale=\getDarcImageFactor,
        switches/scale=\getDarcImageFactor,
        misc/scale=\getDarcImageFactor
    }
    \draw (0,0)
        node [spdt](sw1){} ++(0,0);
    \draw (sw1.in)
        node [antenna]{};
    \draw (sw1.north) node[anchor=south] {RX};
    \draw (sw1.south) node[anchor=north] {TX};

    %RX Path:
    \draw(sw1.out 1)
        |- ++(0.5,2) node[inputarrow](){}
        node [ampshape, boxed, anchor=west](amp1){};
    \draw (amp1.east)
        to [short, name={l1}] ++(2,0) node[inputarrow](){}
        node [mixer, boxed, anchor=west](mix1){};

    %TX Path:
    \draw(sw1.out 2)
        |- ++(0.5,-2) 
        node [ampshape, boxed, anchor=east, rotate=180](amp2){};
    \draw(amp2.west)
        node[inputarrow, rotate=180](){}
        to [amp, boxed, invert, >] ++(2,0) 
        node [mixer, boxed, anchor=west](mix2){};

    % Help Coordinate:
    \draw(amp1.south)
        to [open, name={h1}] (amp2.south);

    \draw(mix1.south)
        node[inputarrow, rotate=90](){}
        to [short, name={h2}] (mix2.north)
        node[inputarrow, rotate=-90](){};

    \draw (h2.center)
        to [open] ++(1.5,0)
        node [spdt, xscale=-1](sw2){};
    \draw (sw2.north) node[anchor=south] {RX};
    \draw (sw2.south) node[anchor=north] {TX};

    \draw(mix1.east)
        -| (sw2.out 1);

    \draw(mix2.east)
        -| (sw2.out 2);

    \draw(sw2.in)
        node [twoportshape, anchor=west, t={\footnotesize TRX}](trx){};

    % Mid Path:
    \draw(h1.center)
        node[qgeneratorshape, t={G}](gen){};
    \draw(gen.east)
        to [twoportsplit,t1=1,t2=3,>,-*] (h2.center);

    % Labels:
    \draw(gen.north) node [anchor=south](){38,666};
    \draw(gen.south) node [anchor=north](){\unit{\mega\hertz}};
    \draw(trx.north) node [anchor=south](){28-30};
    \draw(trx.south)  node [anchor=north](){\unit{\mega\hertz}};
\end{circuitikz}