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If I disconnect the antenna system the noise isn't present.  Yes I have some DC type noise but the noise switch on the radio takes care of most of it. 


I do believe I have RFI being picked up by the antenna system.


All the Acert Cat motors are showing this RFI.  At least the handful of the ones in our fleet.


And yes I don't run the 4 pill anymore, already the Stryker talks further than I  can hear.