NBFM_Repeater

Simple NBFM RepeaterSDR with ADALM PLUTO based on GNURadio >= 3.10 python 3.

Addictions:

• Python 3 >
• gr-iio
• gr-audio
• gr-qtgui
• gr-analog
• libiio >(0.23)

Feature system developement:

• AGC control
• CTCSS decode
• Audio Beacon ID
• Used GPO3 Pluto for driver RF power amplifier frontend
• Linear BF 50-3000hz

It's possible change Paramenter on .ini file or small GUI interface. I hope this project can be an inspiration for someone and can grow and become something more.

Reference ADALM-PLUTO:

https://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/adalm-pluto.html#eb-overview

https://wiki.analog.com/university/tools/pluto/drivers/linux

https://github.com/orgs/analogdevicesinc/repositories

Come and use GPO PLUTO:

• Set Gpo in manual mode

  iio_attr -u ip:pluto.local -D ad9361-phy adi,gpo-manual-mode-enable 1
  

• Set GPO pin ouput

  iio_attr -u ip:pluto.local -D ad9361-phy gpo_set <gpo 0:3>-<state 0:1>
  

More Reference:

https://wiki.analog.com/resources/tools-software/linux-drivers/iio-transceiver/ad9361-customization

Beacon id config

• Create a VAC in the following way

    pacmd load-module module-null-sink sink_name=Virtual_Sink sink_properties=device.description=Virtual_Sink
  

Now set VAC as default audio and so you can launch through any audio player of your beacon and through "crontab" to play the cyclically