Remote SDR

“Remote SDR” is a web application allowing to remotely control an amateur radio transceiver between 1 MHz and 6 GHZ. Its first application was the duplex control of a transceiver dedicated to the QO-100 / Es’Hail 2 geostationary satellite.

The set is made up of:

  • a reception channel: SDR (Software Design Radio) + an Orange PI nanoprocessor
  • a transmitter channel: SDR + an Orange PI nanoprocessor
  • a PC or tablet controlling the SDRs with “Remote SDR” running on a web browser like Chrome or Edge.
Remote SDR synoptic

This configuration makes it possible to locate the HF part near the antennas, which is essential for links above GHz. In the transmission chain, amplifiers must be added to bring the HF signal to the desired level. The SDR of the reception chain can be either an Hack RF One or an RTL-SDR depending on the frequency band you want to cover.

The “Orange Pi” are processors similar to the Raspberry Pi running under the Armbian Operating System. They do part of the signal processing.

The reception chain processed in the Orange Pi is described in the article Remote SSB receiver.

The transmission chain processed in the second Orange Pi is described in the article Remote SSB transmitter.

Remote SDR provides the part of the signal processing necessary for data visualization and audio management.

The code

You can choose between installing the source code yourself on an Orange Pi One Plus or burning an image. Both are available on Github / F1ATB. For installation procedures the following article details them.

Posts on Remote-SDR

5 thoughts on “Remote SDR”

  1. Hi André,
    congratulations for this very nice work.
    I have build all the hardware for the remote SSB tranceiver; but I need a step by step explanations to setup the two Orange Pi One Plus and to install Remote SDR software on my PC.
    Have you planned to publish that?
    Thanks in advance
    André F1FHK

    1. André

      I currently finished some modifications to adapt Remote SDR for the screen of a smartphone.
      Then I will start the explanation of the installation and the release of the code.
      I should start it end this week.
      If you want to contact me directly, have a look on qrz.com

      My website has now a new adress
      https://f1atb.fr

    2. André

      I have published now all the posts adressing the subject of Remote SDR on my website.
      The main page in english is here: https://f1atb.fr/index.php/2020/07/21/remote-sdr-2/
      The main page in french is here: https://f1atb.fr/index.php/fr/2020/07/21/remote-sdr-distant/

      The source code is also available on GitHub: https://github.com/F1ATB/Remote-SDR

      Don’t hesitate to contact me if you need some explanations.

      Best Regards
      F1ATB André
      https://f1atb.fr

    1. Yes it is possible to generate a CW signal with Hack RF. It’s easy to do. I have not yet implemented the function in Remote SDR. It’s on my list of improvements.

      Regards

      André

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