The FCC sent Richfield Electronics (China) Ltd. a Notice of Apparent Liability (NAL) for forfeiture in the amount of $18,000 (PDF) for marketing equipment that did not comply with FCC emission limits and labeling requirements.

The FCC said Richfield admitted it had modified the device's antenna "to improve sound quality." Richfield explained the antenna modification involved a "flexible copper" 1.5 meters in length.

"According to Richfield, it did not realize that the antenna, as modified, would cause increased field strength emission levels," the Report stated. "The sample 'Whole House FM Transmitter' tested by the FCC Office of Engineering and Technology was found to be non-compliant."

The Commission noted that the modification had been made after the device was certificated. Richfield also failed to label the device with the FCC Identifier until last December.

The Notice of Apparent Liability (NAL) for forfeiture in the amount of $18,000 (PDF) has more details on the case and cites the specific FCC rule violations.