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Thread: Radio distortion at Sub-870MHz

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    Default Radio distortion at Sub-870MHz


    Any best guesses what this screen capture (appended) could mean in an environment of industrial metal processing? Particularly, the interest is in possible disturbance to a radio network operating at 868.3 MHz.

    Various kind of production machinery from welding machines, heat ovens, flame-cutting machines and press brakes are operated in the facility all the time and automatically so identifying a possible source is a challenging task as there aren't many possibilities to stop any machines and see. While moving around the machinery, there is no noticable, huge variation in the signal to observe, the appended screenshot does picture well the entire 15 minutes of cruising around. Which one of the machinery could be causing the radio distortion?

    At the identified distortion of 869.3-870.3 MHz, the maximum values for amplitude lay at -40 and density at 20% ... could this still have an impact on the radio network at 868 MHz?

    Thanks for any response!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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