FCC 47 CFR Part 15B Radio Frequency Devices - Unintentional Transmit Antennas

Title 47 of the Code of Federal Regulations (CFR), issued by the Federal Communications Commission (FCC), regulates everything from fraudulent emissions to unlicensed low power broadcasting.

Section 15 describes arrangements in which a transmit antenna may be operated intentionally, unintentionally or incidentally without an individual license. It also describes the technical specifications, administrative requirements, and other conditions for marketing devices covered by this section.

Equipment authorization of unintentional transmit antennas in accordance with Section 15B should be: Unless otherwise exempted, unintentional transmit antennas shall be authorized prior to the commencement of marketing in accordance with certification procedures or the supplier's declaration of conformity as defined in this standard. Only receivers, CB receivers and radar detectors operating in the 30-960 MHz frequency range are subject to the authorizations shown above. Except for radar detectors and CB receivers, receivers operating above 960 MHz or below 30 MHz are exempt from compliance with the technical provisions of this section.

Pursuant to Section 15B, an unintentional transmit antenna is a device that intentionally generates radio frequency energy for use inside the device or transmits radio frequency signals by transmission via connecting cables to the relevant equipment, but is not intended to emit RF energy by radiation or induction. Unintentional transmit antennas are of two groups:

• Class A is a digital device marketed for use in a commercial, industrial, or business environment, excluding a device marketed for use by the general public or intended for domestic use.
• Class B is a digital device marketed for use in a residential environment regardless of its use in commercial and industrial environments. Examples of such devices include, but are not limited to, personal computers, calculators, and similar electronic devices marketed for use by the general public.

Under FCC 47 CFR Part 15B, EMI (electromagnetic interference or radio frequency interference) occurs when an external source causes an interruption in an electrical circuit.

Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides testing services for radio frequency devices and unintentional transmitting antennas within the scope of FCC 47 CFR Part 15B, with its trained and expert staff and advanced technological equipment.