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  1. H

    Parts Needed / Royce 1-641

    Didn't you see a 455kHz filter in your picture?
  2. H

    Parts Needed / Royce 1-641

    Didn't you see a 455kHz filter in your picture?
  3. H

    BinaryRock

    I have a question, is this 455kHz filter still being designed by someone? Is this product still in production use?