Indeed, but I think this is caused by the phone's RF messing up the circuitry in the headset, or the mike.
That would not be suprising. I get that too, especially with the satellite phone.
But I have never seen interference with any VHF or UHF equipment.
Nevertheless, I switch off the satphone, and try to make sure all mobiles are switched off (and that includes the Ipad/3G
) if flying an ILS in IMC.