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Hello Everyone,

I am running a Rotax 912 ULS and my radio is Garmin SL30. We seem to have loud background noise in our Radio Transmission that changes its pitch with engine RPM. We have done our best to locate the wiring fault but have not yet been able to find anything.

Please guide us on how to fix this problem. Thanking you all in advance for your kind support.

Regards,

FNA
  • Re: Garmin SL30 (RT Background Noise Issue)

    by » 11 years ago


    Hi FNA,

    You may only need to change the settings in the radio menu.This alone takes care of a lot of unwanted noise for most. You may have a bad or broken wire on the engine capacitor. The 22K uF capacitor is only a recommendation and you could use a larger one which does help some dampen noise.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


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