Hardware and software setups tested and confirmed working by the community
Getting audio devices, PTT, and GPS working together can be the hardest
part of setting up any packet radio station. This page collects
configurations that real operators have tested and confirmed working.
If your hardware is listed here, you can use these settings as a
starting point and save yourself time.
Don’t see your setup? If you get graywolf
working with hardware not listed here, please
submit a
pull request adding your configuration. Every new entry helps
the next operator.
Digirig Mobile + Raspberry Pi 5 — Raspbian
System
OS
Raspbian (Debian)
Hardware
Raspberry Pi 5
Audio Device
Digirig Mobile
GPS
u-blox USB
Audio Devices
Direction
Path
Channels
Sample Rate
Input
hw:CARD=Device,DEV=0
Mono
48000 Hz
Output
hw:CARD=Device,DEV=0
Mono
48000 Hz
Push-to-Talk
Method
Serial RTS
Device Path
/dev/ttyUSB0
Invert Polarity
Disabled
GPS
Source
Serial Port
Serial Port
/dev/ttyACM0
Baud Rate
9600
Kenwood TH-D75 + Raspberry Pi 4 Model B — Raspbian
System
OS
Raspbian (Debian) 13 - trixie
Hardware
Raspberry Pi 4 Model B, 8GB RAM
TNC
Kenwood TH-D75 (built-in KISS TNC over USB)
GPS
VK-162 (u-blox 7)
KISS Interface
Mode
TNC
Type
Serial
Serial Device
/dev/ttyACM1
Baud Rate
9600
9600 baud is the speed that graywolf talks
to the TH-D75. See below for settings on the radio.
GPS
Source
GPSD
Host
localhost
Port
2947
GPSD reads from /dev/ttyACM0. Configure in
/etc/default/gpsd.
TH-D75 Radio Setup
Menu
Name
Value
505
Data Speed
1200 bps
506
Data Band
B Band
920
Battery Saver
Off
980
USB Function
COM+AF/IF Output
983
KISS
USB
Data Speed is the rate the radio transmits symbols via RF, not the baud rate
it speaks over USB to the Raspberry Pi.
Configure menu settings as above.
Tune Band B to 144.390 MHz.
Press [F] → [APRS]. Band B
should show KISS 12; if it shows
APRS, press [F] →
[APRS] again.
Connect the TH-D75 to the Raspberry Pi via USB cable.
