diff --git a/contents/drawings/1041.svg b/contents/drawings/1041.svg
new file mode 100644
index 0000000..e705986
--- /dev/null
+++ b/contents/drawings/1041.svg
@@ -0,0 +1,151 @@
+
+
diff --git a/contents/drawings/1041.tex b/contents/drawings/1041.tex
new file mode 100644
index 0000000..1da7d31
--- /dev/null
+++ b/contents/drawings/1041.tex
@@ -0,0 +1,41 @@
+% Author: Prof. Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{circuitikz}
+ \draw(0,0)
+ to [european resistor, o-] ++(2,0) coordinate(s1);
+ \draw[DARCblue, color=DARCblue](s1)
+ to [short] ++(0,-0.5) coordinate(x1);
+ \draw[DARCblue, color=DARCblue](x1)
+ to [short, *-] ++(-0.25,0)
+ to [american inductor] ++(0,-1)
+ to [short] ++(+0.25,0) coordinate(x2);
+ \draw[DARCblue, color=DARCblue](x1)
+ to [short, *-] ++(0.25,0)
+ to [C] ++(0,-1)
+ to [short] (x2)
+ to [short] ++(0,-0.5) coordinate(s2);
+ \draw(s2) to [short, *-o] ++(-2,0) coordinate(s3);
+ \draw(s1) to [short, *-o] ++(+2,0) coordinate(s4);
+ \draw(s2) to [short, *-o] ++(+2,0) coordinate(s5);
+ %
+ \draw[DARCred, -Triangle](s2) to [open] ++(0.75,0.5) coordinate(s6) -- ++(0,1) node[above]{$U_A$};
+ \draw[DARCred, -Triangle](s6) -- ++(1,0) node[right]{$f$};
+ %
+ \begin{scope}[shift={($(0,0)+(s6)$)}]
+ \draw[very thick, DARCred]
+ (0.10,0.90) .. controls (0.5,0.0) and (0.5,0.0) .. (0.90,0.90)
+ coordinate[pos=0.5] (min);
+ \end{scope}
+ %
+ \draw[DARCblue, -Triangle](s3) to [open] ++(0.5,0.5) coordinate(s7) -- ++(0,1) node[above]{$|Z|$};
+ \draw[DARCblue, -Triangle](s7) -- ++(1,0) node[right]{$f$};
+ %
+ \begin{scope}[shift={($(0,0)+(s7)$)}]
+ \draw[very thick, DARCblue]
+ (0.10,0.10) .. controls (0.4,0.1) and (0.3,0.9) .. (0.50,0.90)
+ (0.50,0.90) .. controls (0.7,0.9) and (0.6,0.1) .. (0.90,0.10)
+ coordinate[pos=0.5] (min);
+ \end{scope}
+ %
+ \draw[color=DARCred](s4) to [open, v={$U_A$}] (s5);
+\end{circuitikz}
\ No newline at end of file
diff --git a/contents/drawings/1059.svg b/contents/drawings/1059.svg
new file mode 100644
index 0000000..2e676f5
--- /dev/null
+++ b/contents/drawings/1059.svg
@@ -0,0 +1,107 @@
+
+
diff --git a/contents/drawings/1059.tex b/contents/drawings/1059.tex
new file mode 100644
index 0000000..7f637f4
--- /dev/null
+++ b/contents/drawings/1059.tex
@@ -0,0 +1,29 @@
+% Author: Prof. Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{tikzpicture}
+ \draw[-Triangle](0,0) -- ++(0,1.25) node[anchor=south] {$Q$};
+ \draw[-Triangle](0,0) -- ++(1.25,0) node[anchor=west] {$I$};
+ \draw(0,0) -- ++(-1.25,0);
+ \draw(0,0) -- ++(0,-1.25);
+ \draw[gray](0,0) circle (1);
+ %
+ \draw[gray](0,0) -- ++( 45:1.0);
+ \draw[gray](0,0) -- ++(135:1.0);
+ \draw[gray](0,0) -- ++(225:1.0);
+ \draw[gray](0,0) -- ++(315:1.0);
+ %
+ \draw[-Triangle](0.75,0) arc (0: 45:0.75) node[pos=0.9, anchor=south west] {$\qty{ 45}{\degree}$};
+ \draw[-Triangle](0.65,0) arc (0:135:0.65) node[pos=0.9, anchor=south east] {$\qty{135}{\degree}$};
+ \draw[-Triangle](0.55,0) arc (0:225:0.55) node[pos=0.9, anchor=north east] {$\qty{225}{\degree}$};
+ \draw[-Triangle](0.45,0) arc (0:315:0.45) node[pos=0.9, anchor=north west] {$\qty{315}{\degree}$};
+ %
+ \draw( 45:1) node[anchor=center, circle, draw, fill=DARCblue](m1){};
+ \draw(135:1) node[anchor=center, circle, draw, fill=DARCblue](m2){};
+ \draw(225:1) node[anchor=center, circle, draw, fill=DARCblue](m3){};
+ \draw(315:1) node[anchor=center, circle, draw, fill=DARCblue](m4){};
+ %
+ \draw(m1.north east) node[anchor=south west] {$11$};
+ \draw(m2.north west) node[anchor=south east] {$01$};
+ \draw(m3.south west) node[anchor=north east] {$00$};
+ \draw(m4.south east) node[anchor=north west] {$10$};
+\end{tikzpicture}
\ No newline at end of file
diff --git a/contents/drawings/1059.txt b/contents/drawings/1059.txt
new file mode 100644
index 0000000..30404ce
--- /dev/null
+++ b/contents/drawings/1059.txt
@@ -0,0 +1 @@
+TODO
\ No newline at end of file
diff --git a/contents/drawings/1060.svg b/contents/drawings/1060.svg
new file mode 100644
index 0000000..abbaa7a
--- /dev/null
+++ b/contents/drawings/1060.svg
@@ -0,0 +1,107 @@
+
+
diff --git a/contents/drawings/1060.tex b/contents/drawings/1060.tex
new file mode 100644
index 0000000..edaaec6
--- /dev/null
+++ b/contents/drawings/1060.tex
@@ -0,0 +1,15 @@
+% Author: Prof. Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{tikzpicture}
+ \draw[-Triangle](0,0) -- ++(0,1.25) node[anchor=south] {$Q$};
+ \draw[-Triangle](0,0) -- ++(1.25,0) node[anchor=west] {$I$};
+ \draw(0,0) -- ++(-1.25,0);
+ \draw(0,0) -- ++(0,-1.25);
+ \draw[gray](0,0) circle (1);
+ %
+ \draw[-Triangle, ultra thick, DARCblue](0,0) coordinate(start) -- ++( 45:1.0) coordinate(end);
+ %
+ \draw[-Triangle](0.75,0) arc (0: 45:0.75) node[pos=0.5, anchor=west] {Phase};
+ %
+ \DARCmeasure{start}{end}{-0.08,+0.08}{45}{Amplitude};
+\end{tikzpicture}
\ No newline at end of file
diff --git a/contents/drawings/1060.txt b/contents/drawings/1060.txt
new file mode 100644
index 0000000..30404ce
--- /dev/null
+++ b/contents/drawings/1060.txt
@@ -0,0 +1 @@
+TODO
\ No newline at end of file
diff --git a/contents/drawings/1061.svg b/contents/drawings/1061.svg
new file mode 100644
index 0000000..5d6727a
--- /dev/null
+++ b/contents/drawings/1061.svg
@@ -0,0 +1,148 @@
+
+
diff --git a/contents/drawings/1061.tex b/contents/drawings/1061.tex
new file mode 100644
index 0000000..c3caf43
--- /dev/null
+++ b/contents/drawings/1061.tex
@@ -0,0 +1,42 @@
+% Author: Prof. Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{tikzpicture}
+ \draw[-Triangle](0,0) -- ++(0,1.25) node[anchor=south] {$Q$};
+ \draw[-Triangle](0,0) -- ++(1.25,0) node[anchor=west] {$I$};
+ \draw(0,0) -- ++(-1.25,0);
+ \draw(0,0) -- ++(0,-1.25);
+ %
+ \draw(-0.75,+0.75) node[anchor=center, circle, draw, fill=DARCblue](m0){};
+ \draw(-0.75,+0.25) node[anchor=center, circle, draw, fill=DARCblue](m1){};
+ \draw(-0.75,-0.25) node[anchor=center, circle, draw, fill=DARCblue](m2){};
+ \draw(-0.75,-0.75) node[anchor=center, circle, draw, fill=DARCblue](m3){};
+ \draw(-0.25,+0.75) node[anchor=center, circle, draw, fill=DARCblue](m4){};
+ \draw(-0.25,+0.25) node[anchor=center, circle, draw, fill=DARCblue](m5){};
+ \draw(-0.25,-0.25) node[anchor=center, circle, draw, fill=DARCblue](m6){};
+ \draw(-0.25,-0.75) node[anchor=center, circle, draw, fill=DARCblue](m7){};
+ \draw(+0.25,+0.75) node[anchor=center, circle, draw, fill=DARCblue](m8){};
+ \draw(+0.25,+0.25) node[anchor=center, circle, draw, fill=DARCblue](m9){};
+ \draw(+0.25,-0.25) node[anchor=center, circle, draw, fill=DARCblue](m10){};
+ \draw(+0.25,-0.75) node[anchor=center, circle, draw, fill=DARCblue](m11){};
+ \draw(+0.75,+0.75) node[anchor=center, circle, draw, fill=DARCblue](m12){};
+ \draw(+0.75,+0.25) node[anchor=center, circle, draw, fill=DARCblue](m13){};
+ \draw(+0.75,-0.25) node[anchor=center, circle, draw, fill=DARCblue](m14){};
+ \draw(+0.75,-0.75) node[anchor=center, circle, draw, fill=DARCblue](m15){};
+ %
+ \draw(m0.north) node[anchor=south] {$0000$};
+ \draw(m1.north) node[anchor=south] {$0001$};
+ \draw(m2.north) node[anchor=south] {$0011$};
+ \draw(m3.north) node[anchor=south] {$0010$};
+ \draw(m4.north) node[anchor=south] {$0100$};
+ \draw(m5.north) node[anchor=south] {$0101$};
+ \draw(m6.north) node[anchor=south] {$0111$};
+ \draw(m7.north) node[anchor=south] {$0110$};
+ \draw(m8.north) node[anchor=south] {$1100$};
+ \draw(m9.north) node[anchor=south] {$1101$};
+ \draw(m10.north) node[anchor=south] {$1111$};
+ \draw(m11.north) node[anchor=south] {$1110$};
+ \draw(m12.north) node[anchor=south] {$1000$};
+ \draw(m13.north) node[anchor=south] {$1001$};
+ \draw(m14.north) node[anchor=south] {$1011$};
+ \draw(m15.north) node[anchor=south] {$1010$};
+\end{tikzpicture}
\ No newline at end of file
diff --git a/contents/drawings/1061.txt b/contents/drawings/1061.txt
new file mode 100644
index 0000000..30404ce
--- /dev/null
+++ b/contents/drawings/1061.txt
@@ -0,0 +1 @@
+TODO
\ No newline at end of file
diff --git a/contents/drawings/1062.svg b/contents/drawings/1062.svg
new file mode 100644
index 0000000..15c4c18
--- /dev/null
+++ b/contents/drawings/1062.svg
@@ -0,0 +1,160 @@
+
+
diff --git a/contents/drawings/1062.tex b/contents/drawings/1062.tex
new file mode 100644
index 0000000..a1c0398
--- /dev/null
+++ b/contents/drawings/1062.tex
@@ -0,0 +1,46 @@
+% Author: Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{circuitikz}
+ \ctikzset{
+ blocks/scale=\getDarcImageFactor,
+ RF/scale=\getDarcImageFactor,
+ misc/scale=\getDarcImageFactor
+ }
+ \draw(0,0)
+ node[tlmicshape, rotate=90] (mic){};
+ \draw(mic.south)
+ to [adc, >] ++(2,0)
+ node [sourcecodershape, anchor=west, fill={DARCblue!50!white}](foo){};
+ \draw(foo.east)
+ to [channelcoder, >, fill={DARCblue!50!white}] ++(2,0)
+ node [inputarrow](){}
+ node [mappershape, anchor=west, fill={DARCblue!50!white}](question){};
+ \draw(question.right up)
+ to [short] ++(0.5,0)
+ |- ++(0.5,1) node[inputarrow](){}
+ node[dacshape, anchor=west](dac1){};
+ \draw(question.right down)
+ to [short] ++(0.5,0)
+ |- ++(0.5,-1) node[inputarrow](){}
+ node[dacshape, anchor=west](dac2){};
+ \draw(dac1.east) ++(1,0) coordinate(h1) (h1|-question.west)
+ node[mixer, box, anchor=west](mix){};
+ \draw(dac1.east)
+ to [short] ++(0.5,0)
+ |- (mix.left up) node[inputarrow](){};
+ \draw(dac2.east)
+ to [short] ++(0.5,0)
+ |- (mix.left down) node[inputarrow](){};
+ \draw(mix.east)
+ to [amp, box] ++(2,0)
+ node[bandpassshape, anchor=west](bp1){};
+ \draw(bp1.east)
+ to [short] ++(0.5,0)
+ node[antenna](){};
+ \draw(mix.south)
+ node [inputarrow, rotate=90](){}
+ to [short] ++(0,-1)
+ node[qgeneratorshape, t={G}, anchor=north](){};
+ \draw(mix.north)
+ node[anchor=south](){IQ};
+\end{circuitikz}
\ No newline at end of file
diff --git a/contents/drawings/1062.txt b/contents/drawings/1062.txt
new file mode 100644
index 0000000..30404ce
--- /dev/null
+++ b/contents/drawings/1062.txt
@@ -0,0 +1 @@
+TODO
\ No newline at end of file
diff --git a/contents/drawings/1063.svg b/contents/drawings/1063.svg
new file mode 100644
index 0000000..e214b06
--- /dev/null
+++ b/contents/drawings/1063.svg
@@ -0,0 +1,166 @@
+
+
diff --git a/contents/drawings/1063.tex b/contents/drawings/1063.tex
new file mode 100644
index 0000000..9917d31
--- /dev/null
+++ b/contents/drawings/1063.tex
@@ -0,0 +1,68 @@
+% Author: Dr. Matthias Jung, DL9MJ
+% Year: 2026
+\begin{circuitikz}
+ \ctikzset{
+ blocks/scale=\getDarcImageFactor,
+ RF/scale=\getDarcImageFactor,
+ misc/scale=\getDarcImageFactor
+ }
+ \draw(0,0)
+ node[antenna](){}
+ to [amp, box, name={amp1}, >] ++(2,0)
+ node [mixer, box, anchor=west](mix){};
+
+ \draw(mix.right up)
+ to [short] ++(0.5,0)
+ |- ++(0.5,1)
+ node[inputarrow](){}
+ node[lowpassshape, anchor=west](lp1){};
+ \draw(lp1.east)
+ to [short] ++(0.5,0)
+ node[inputarrow](){}
+ node [adcshape, anchor=west](adc1){};
+
+ \draw(mix.right down)
+ to [short] ++(0.5,0)
+ |- ++(0.5,-1)
+ node[inputarrow](){}
+ node[lowpassshape, anchor=west](lp2){};
+ \draw(lp2.east)
+ to [short] ++(0.5,0)
+ node[inputarrow](){}
+ node [adcshape, anchor=west](adc2){};
+
+ \draw(adc1.east) ++(1,0) coordinate(h1)
+ (h1|-mix.west)
+ node[demappershape, anchor=west, fill={DARCblue!50!white}](question){};
+
+ \draw(adc1.east)
+ to [short] ++(0.5,0)
+ |- (question.left up)
+ node[inputarrow](){};
+
+ \draw(adc2.east)
+ to [short] ++(0.5,0)
+ |- (question.left down)
+ node[inputarrow](){};
+
+ \draw(question.east)
+ to [channeldecoder, >, fill={DARCblue!50!white}] ++(2,0)
+ node[sourcedecodershape, anchor=west, fill={DARCblue!50!white}](source){}
+ node[inputarrow](){};
+ \draw(source.east)
+ to [dac, >] ++(2,0)
+ node[inputarrow](){}
+ node[ampshape, box, anchor=west](amp2){};
+
+ \draw(amp2.east)
+ to [short] ++(0.5,0)
+ node[inputarrow](){}
+ node [loudspeakershape, rotate=-90, anchor=south](){};
+
+ \draw(mix.south)
+ to [short] ++(0,-1)
+ node[qgeneratorshape, t={G}, anchor=north](){};
+
+ \draw(mix.north)
+ node[anchor=south](){IQ};
+\end{circuitikz}
\ No newline at end of file
diff --git a/contents/drawings/1063.txt b/contents/drawings/1063.txt
new file mode 100644
index 0000000..e69de29
diff --git a/contents/drawings/675.svg b/contents/drawings/675.svg
index 2138108..fab0e01 100644
--- a/contents/drawings/675.svg
+++ b/contents/drawings/675.svg
@@ -1,118 +1,115 @@
-