<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\subsection{Simplex (0x07)}

A CATS station may want to articulate a frequency for voice purposes. This would usually be for transmitting what frequencies the station is monitoring. Each simplex whisker represents a single frequency. \textbf{A valid CATS packet may contain zero or more simplex whiskers.}

\subsubsection{Structure}

{\def\arraystretch{1.3}
\begin{tabular}{|l|l|l|l|}
  \hline
  \textbf{Byte offset} &amp; \textbf{Length} &amp; \textbf{Value} &amp; \textbf{Description} \\
  \hline
  0 &amp; 1 &amp; 0x07 &amp; Whisker type \\
  \hline
  1 &amp; 1 &amp; 6 &amp; Whisker length in bytes \\
  \hline
  2 &amp; 4 &amp; &amp; Frequency (unsigned integer, Hz) \\
  \hline
  6 &amp; 1 &amp; &amp; Modulation type (See modulation table) \\
  \hline
  7 &amp; 1 &amp; &amp; Power (unsigned integer, ${4 \over{\text{dBm}}} x$, 255 = unknown) \\
  \hline
\end{tabular}
}

\subsubsection{Modulation Table}

\begin{tabular}{|l|l|}
  \hline
  \textbf{Modulation ID} &amp; \textbf{Modulation type} \\
  \hline
  0 &amp; Unknown/unlisted \\
  \hline
  1 &amp; CATS \\
  \hline
  2 &amp; FM (5.0 KHz deviation) \\
  \hline
  3 &amp; AM \\
  \hline
  4 &amp; USB \\
  \hline
  5 &amp; LSB \\
  \hline
  6 &amp; CW \\
  \hline
  7 &amp; FreeDV \\
  \hline
  8 &amp; M17 \\
  \hline
  9 &amp; D-STAR \\
  \hline
  10 &amp; DMR \\
  \hline
  11 &amp; Fusion \\
  \hline
  12 &amp; P25 \\
  \hline
  13 &amp; NFM (2.5 KHz deviation) \\
  \hline
\end{tabular}
</pre></body></html>