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  #21  
Old 12-01-2010, 02:01 PM
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marchudson marchudson is offline
 
Join Date: Feb 2006
Location: East Texas
Posts: 192
Default Finally Fixed problem

After numerous contacts with Dynon, my system for some reason was picking up RFI from the CHT, EGT, AMP sensors and feeding it to the EMS module. The EMS module was not filtering it out and this noise was very noticeable on the gauges.

A very few, less than 5%, of Skyview customers had reported problems with the main panel emitting RFI and were noticing it on the radio. Dynon's solution was capacitive filter from this company. http://www.l-com.com/item.aspx?id=3138 and the people that used these filters reported good results.

After looking at the specs for the filters, I figured they would be an elegant solution. I went with the Capacitive filters. I had already tried ferrite coils with no luck.

Now that these are installed, I don't get even the slightest hint of noise from the EMS module even while transmitting inside my metal building. I installed the filters on all three connectors.

I hope this helps anyone that might be having similar problems.


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Marc Hudson
Houston
RV-7 Sold
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  #22  
Old 12-09-2010, 08:43 PM
DBone DBone is offline
 
Join Date: Dec 2006
Location: McKinney, TX (T31)
Posts: 209
Default different system, same solution

I want to add a HUGE +1 to this thread. I have a GRT HX with dual AHRS that was having the same trouble as Marc described, only it was showing as an altitude jump when I keyed the mic. Multiple calls to GRT and getting advice from everybody that would listen didn't fix the problem. $30 for 2 of these L-Com filters, and my world is right again. And no, I don't work for them. I'm just a super satisfied customer.
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Dave B
McKinney, TX (T31)
N517AD - RV-7A - Sold
N963TP - RV-7A - Partner
N10HW - RV-10 - Partner
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