My installer is back from o'seas and reports that the ferrite beads
cured the RF break-through. However, he also asked that a technician
give the radio installations the once over and was told that they were
not up to spec. "Leaky" was the word. After the radio tech did his
jiggery-pokery the RF was not a problem without the ferrites, but they
were put back on anyway. So that looks like a good belt 'n' braces fix

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