two way text/command communication using RFD 900X

Allows encrypted communication between two RF serial bridge modems of up to 40km distance LOS

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These RFD900X modems are originally designed for drones (telemetry) although since they basically are a serial bridge you can pipe anything through them.

You'll need two rfd 900x modems and two separate USB cables (or just buy the kit)
you'll also need need picocom (comes) with most debian and raspberry pi repos
once both modems are connected to separate linux machines the light should turn solid green on both modems.

we're now ready to connect to the modems with picocom over the usb cable.

the command i used for the connection was: sudo picocom --baud 57600 /dev/ttyUSB0

* you also need to local echo on both modems/machines using: ctrl+c+a

you may need to change this to suit your needs.

now anything you type into the terminal will also be displayed on the opposite modem's terminal :)

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aydanO wrote 06/07/2022 at 23:52 point

Hey, Senior Jung. I was wondering if you could shed some light on how you were able to successfully send messages from PC to RPi over RFD900+. Thank you!

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Sunghun Jung wrote 08/26/2021 at 14:32 point


I could successfully setup the above and can send messages from PC to RPi 3B over RFD900+.

However, I am now trying to show up "login prompt" just like the one showing up when we use SSH.

Are there any information which I can refer?

My current system setup is

PC(Ubuntu 16.04) - USB to TTL - RFD900+  <=>  RFD900+ - USB to TTL - RaspberryPi 3B

  Are you sure? yes | no

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