CAT Control

CAT Control

AetherSDR includes a built-in Hamlib-compatible rigctld server and virtual serial ports for CAT control.

rigctld TCP Server

4 independent TCP servers, one per slice:

Channel	Port	Slice
A	4532	Slice 0
B	4533	Slice 1
C	4534	Slice 2
D	4535	Slice 3

Enable

• Settings → Autostart rigctld with AetherSDR — starts on every connect
• Or manually via DIGI applet → rigctld → Enable

Supported Commands

Command	Description
f	Get frequency (Hz)
F <freq>	Set frequency (Hz)
m	Get mode + passband
M <mode> <bw>	Set mode + passband
t	Get PTT status
T <0/1>	Set PTT
v	Get VFO
s	Get split
\dump_state	Radio capabilities

Testing

echo "f" | nc localhost 4532
# Returns: 14100000

echo "F 7200000" | nc localhost 4532
# Returns: RPRT 0

Virtual Serial Ports (TTY)

4 PTY symlinks, one per slice:

Channel	Path
A	/tmp/AetherSDR-CAT-A
B	/tmp/AetherSDR-CAT-B
C	/tmp/AetherSDR-CAT-C
D	/tmp/AetherSDR-CAT-D

Enable via Settings → Autostart CAT with AetherSDR or the DIGI applet.

Applications that support serial CAT (N1MM, fldigi) can connect to these paths as a serial port.

DIGI Applet

The DIGI applet in the right panel shows:

• Slice selector — which slice each channel controls
• rigctld — Enable button, port, status (listening/stopped, client count)
• TTY — Enable button, path
• DAX — virtual audio channel status