Small 80m beacon for ARDF

 Schematic

It's a very simple HF oscillator, with a flip flop astable multivibrator

FT4X to CM108 USB soundcard interface

Using a Yaesu FT4X, i make a little isolated interface for my CM108 USB soundcard.  

 

I use this setup for the APRS network with a Raspberry pi and Direwolf software.

 

Don't forget to open the squech of the FT4X (squelch allways open on APRS !)

-> push Fonction then MONI/CALL, and set OFF

 

Based on YD0NXX website
https://yd0nxx.wordpress.com/2020/05/12/adding-ptt-on-usb-soundcard/ 

 

 

 

 

Some extra information for Direwolf, and xastir configuration:

 

Direwolf source and installation :
 https://github.com/wb2osz/direwolf

 

start direwolf on raspberry py, the good way :

https://www.f4fxl.org/start-direwolf-at-boot-the-systemd-way/

To see APRS data on a console :

sudo tmux attach -t direwolf

 

 

xastir AGWPE, and map configuration: