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RF interference on GRT fuel pressure with PTT

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Dec 20, 2012 10:39 am Post subject: RF interference on GRT fuel pressure with PTT

At 11:53 AM 12/20/2012, you wrote:

 	  Quote: 	
		  Hi Bob

This post from several weeks ago but Id like to revisit it please, I 

plan to try to fix this problem soon.

Again the problem is fuel pressure indication spike on transmit from 

either comm at the higher end of the band.

The engine monitor connector is a DB-25. My plan is to install the 

capacitor listed between the fuel pressure "Aux" input and ground 

pins inside the connector if possible using short-as-possible lead 

length, then a split toroid on the wire bundle coming into the DB-25connector.

Thanks for any clarification, Tim


	


    Try just the capacitor first. Add only one component

    at a time to make sure that you know the benefit of

    each. I've had readers report that a whole lot of

    "stuff" in an RFI mitigation experiment was "successful"

    leaving me wondering how much of that stuff could be

    taken out without reducing the degree of success.



   Bob . . .

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ChangDriver

Joined: 15 Sep 2007
Posts: 266

Posted: Wed Dec 26, 2012 2:07 pm Post subject: Re: RF interference on GRT fuel pressure with PTT

Forget about trying to put the capacitor on the line and solder to ground and just get one of these noise supression connector adapters.



http://www.camiresearch.com/connector_protector.html



Way simpler and it puts EMI supression on each pin!

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