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Hello everyone

Ask if someone can help me with my next problem

I have an MGL V6 radio installed in my ELA 07 gyrocopter with Rotax 914 engine and I use Flycom helmets

The problem I have is that when they speak to me I hear a buzz in the reception  I thought it was the gasoline pumps but when I turn off the engine and leave the electric pumps on, the buzz stops, the noise is coming in when they call me or when I listen to the ATIs I already checked all the ground ok antenna ok Also I put another radio with its harness and the same thing happens The interference is being generated by the engine when it is on, has this happened to someone?

THANK YOU 

ANTONIO 

  • Re: NOISE FROM ENGINE

    by » one month ago


    Is this a new problem or has it always been there? Does the buzz vary with engine speed? If so then it is likely to be the ignition. I would pull the spark plug caps off the spark plugs and measure the resistance from the contact inside the NGK plug cap to the inside of the other plug lead that is fed by the same coil. You should measure the sum of the resistance of both NGK resistive plug caps, it should be approximately 10k ohms. These plug caps do go bad over time, I have replaced a few of mine now.


    Thank you said by: Antonio Eguia

  • Re: NOISE FROM ENGINE

    by » 6 weeks ago


     

    Hi Kevin

    It is a new problem, I also read in another blog that some usb charging ports put noise and I had just installed one

    I thank you, I will check your advice and disconnect the charger I keep you informed thanks

     

     


  • Re: NOISE FROM ENGINE

    by » 6 weeks ago


    I second the possibility of the noise coming from the USB plug-in adapter.  And it's super easy to confirm:  while you're in the airplane, pull the USB adapter from the Aux plug.  If the noise goes away, you've found your culprit. 

    Unfortunately, many of those adapters are complete junk with no noise shielding whatsoever.  I've owned several "no-name" ones that created all kinds of static noise on the radio/intercom. 

    The USB adapters that Sporty's sells (the one with the built-in voltage readout, which is nice to have!) seem to be pretty decent, and two different ones I've used have created no radio interferance at all.  Ditto for the Anker USB adapter I purchased from Amazon.  They seem to be pretty well made, and are Apple and Android "certified".


    Thank you said by: Antonio Eguia

  • Re: NOISE FROM ENGINE

    by » 6 weeks ago


     

    Hello, I already checked the radio, remove the usb charger and confirmed the noise comes from the motor when it accelerates the buzz increases and vice versa when decelerating the noise decreases I will have to check all the ground connections


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