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  • Electrical: Radio static

    My stock 63 Avanti is back on the road following an engine-out restoration.

    The radio is getting a lot of static....which of course disappears when the engine isn't running.
    All the stainless steel shielding is in place.

    Any suggestions?
    63 Avanti R1 2788
    1914 Stutz Bearcat
    (George Barris replica)

    Washington State

  • #2
    What about a ground wire on the copper line from the Oil pressure Gauge to the engine flex hose?

    Got radio resistant spark plug wires?
    StudeRich
    Second Generation Stude Driver,
    Proud '54 Starliner Owner
    SDC Member Since 1967

    Comment


    • #3
      Originally posted by StudeRich View Post
      What about a ground wire on the copper line from the Oil pressure Gauge to the engine flex hose?
      Don't know. I are you saying it needs one?
      Originally posted by StudeRich View Post
      Got radio resistant spark plug wires?
      Same spark plug wires as before.
      63 Avanti R1 2788
      1914 Stutz Bearcat
      (George Barris replica)

      Washington State

      Comment


      • #4
        =JBOYLE;564277]Don't know. I are you saying it needs one?/Cut/
        Of course, even steel bodied Studes. have one! Otherwise you may be carrying the magnetic field around the high voltage wires to the area under the dash right near the Radio.

        Look right below the wiper motor, just before the rubber covered copper tubing makes the bend over the top of the firewall, about 1 1/2 inches below that there was a break in the rubber sleeving with a clamp and a heavy gauge white wire that may go to the back of the left cylinder head or into the "grounding" harness. I can't see for sure, but it does not make difference, it needs to go to ground.


        That does not mean it will cure it, but it may and can't hurt.
        Last edited by StudeRich; 07-24-2011, 04:52 PM.
        StudeRich
        Second Generation Stude Driver,
        Proud '54 Starliner Owner
        SDC Member Since 1967

        Comment


        • #5
          Didn't we used to put an aluminum can, a capacitor, on the generator to cancel radio static?

          Comment


          • #6
            There are supposed to be buffering capacitors(condensers) on your alternator, your voltage regulator, the wiper motor and the distributor....(and the originals were all different values) Anything with a rotating electrical field generates radio static.
            64 GT Hawk (K7)
            1970 Avanti (R3)

            Comment


            • #7
              Originally posted by 64V-K7 View Post
              There are supposed to be buffering capacitors(condensers) on your alternator, your voltage regulator, the wiper motor and the distributor....(and the originals were all different values) Anything with a rotating electrical field generates radio static.
              Yes they had those also, that will help keep the static out of the Radio from the CHARGING circuit, but not the high voltage plug wires with a Fiberglass body, the resistence wires, the shielding AND the ground on the Oil Pressure Gauge line must have been required because they were all there!
              StudeRich
              Second Generation Stude Driver,
              Proud '54 Starliner Owner
              SDC Member Since 1967

              Comment


              • #8
                Originally posted by 64V-K7 View Post
                There are supposed to be buffering capacitors(condensers) on your alternator, your voltage regulator, the wiper motor and the distributor....(and the originals were all different values)....
                Are the values critical? If I have to buy them can it be a simple "one size fits all" by getting all in a higher value?
                63 Avanti R1 2788
                1914 Stutz Bearcat
                (George Barris replica)

                Washington State

                Comment


                • #9
                  NAPA has the correct capacitors, the part number is RC1. Trying to eliminate the static in Avanti radios is tough due to the fiberglass body. My Avanti had a static problem and it turned out to be a bad lead wire on the antenna. Bud

                  Comment


                  • #10
                    As an added note, be sure that the engine has a good ground connection to the frame and the ground connection between the engine and the wiring in the car is in good condition. Bud

                    Comment


                    • #11
                      I stopped by a radio installation shop, they thought it was noise from the coil moreso than alternator.
                      Make sense?

                      In a similar thread, http://forum.studebakerdriversclub.c...essor-Question
                      Bud said: Don't forget the positive side of the ignition coil too. NAPA has the correct caps, the part number is RC1. Bud
                      Is that what they were referring to?
                      Last edited by JBOYLE; 07-31-2011, 01:47 PM.
                      63 Avanti R1 2788
                      1914 Stutz Bearcat
                      (George Barris replica)

                      Washington State

                      Comment


                      • #12
                        The coil produces voltage spikes on the primary winding of the coil every time it produces a spark. The RC1 capacitor is supposed to reduce the noise problem generated by the coil. Try disconnecting the radio antenna from the radio, run the engine with the radio turned on, if the noise disappears, the ignition noise is being picked up by the antenna or antenna lead wire. If you still have noise then you will need a noise filter connected to the hot lead of the radio as the noise is being picked up by the car's wiring. Bud

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