Sean,
Are you doing all these range checks in the garage or getting the aircraft outside to perform these tests????
Thinking about this one a bit


Oh, BTW.... The Merlin ECU, FADEC by Gaspar is one of the quitest ECU's on the market when it comes to EMI. Extensive test where run to check the EMI emissionsof the FADEC controller, results can be seen here: http://www.espiell.com/emi.htm

So.... Where are these tests being done? Is the aircraft on some sort of metal stand??? give me a bit more info as to how the test is being done in terms of aircraft location.