Radio interference from brakes

["Graham Hilder" <graham.hilder@domain.elided>]

Re his brakes RFI, Robert wrote :=20
"Thanks to all...... So far I have the following possible solutions to =
try:
1. RFI leaks from ABS circuit.
2. Semi - Metalic Brake Pads? (Yes, they are)
3. Pad wear indicators.
4. Try an RFI filter in the B+ line.
5. Offer to search acumulated tech articles.
........I am somewhat skeptical about the ABS causing this because the =
noise is evident while rolling down the highway, not just when applying =
the brakes........  I like the possibility of the noise being caused by =
the semi-metalics or the pad sender. I'll let you  know what happens....tha=
nks".

On this, I'd agree that the ABS seems unlikely. Certainly the car RFI tech =
articles I collected were written 2 or 3 decades ago, way before ABS was =
common (maybe before it was used at all?), and any brakes-RFI issues they =
cover must be ones which can arise from the brakes themselves.   Anyway, =
will be interested to hear what you find, Robert, and let me know if you =
need me to dig out and check through those articles. Remember to identify =
whether the noise is coming in via your antenna input or your +12 input, =
by disconnecting your antenna and listening.

Best regards,=20
Graham in NZ.=20
GTV, Alfetta GTV, Alfa Sud ti & Sprint

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