I have determined that the RFI I am hearing on 80 and 160 is coming from my new
Trane XV95 furnace, in particular the DC motor/controller on the "inducer fan".
I have been notified by the manufacturer that a shielded cable kit is
available for installation by a service tech called "KIT14688". I have not had
this cable kit installed yet but will let you know if it works. This is
evidently a problem with many high efficiency Trane furnaces, not just the XV95.
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