What is FCC Part 97 Compliance Testing?

FCC Part 97 is a technical regULation created specifically to meet the needs of Amateur Radio Service stations and equipment, detailing technical requirements and compliance standards for such usage.

What Is FCC Part 97 (47 CFR Part 97 - Amateur Radio Service)?

FCC Part 97 is an official set of technical and administrative regulations established by the United States Federal Communications Commission for use within Amateur Radio Services in the U.S. Its core goals include:

1. Efficient Utilization of Radio Spectrum: Limiting harmful interference caused by amateur equipment with licensed services such as broadcasting, aviation and emergency communications.

2. Regulating amateur radio operations and equipment: Requiring devices to meet minimum performance standards such as frequency stability or transmission power control while permitting experimentation within authorized frequency bands is the essence of regulation for amateur radio.

3. Clarifying Responsibilities: Enforcing that manufacturers, importers, and operators adhere to technical rules while sharing responsibility for spectrum management is key in improving spectral management.

Part 97 derives its regulatory authority from Title 47 of the U.S. Communications Act and contains requirements that span across the equipment lifecycle: design, manufacturing, testing, labeling, and licensing.

What Products Require FCC Part 97 Testing?

FCC Part 97 Testing Applications

Amateur Radio Station Equipment that needs fcc testing may include products designed, manufactured, or modified specifically to support amateur radio services such as:

1. Core Transmitting/Receiving Equipment | HHF Radio Inc.

The core transmitting/receiving equipment comprises handheld amateur radios (HTs or Handy Talkies), two mobile amateur radios, three base stations, four transceivers (including VHF/UHF and HF bands) as well as five repeaters as shown below.

2. Key Components and Accessories

1. Transmitter modules (e.g., RF power amplifiers for assembly)

2. Receiver front-end modules (e.g., high-frequency filters and mixers)

3. Modems compatible with amateur digital modes like PSK31 or FT8 and

4. Antenna systems (such as directional antennas, Yagi antennas or portable foldable antennas).

5. Power adapters (which must meet EMC regulations).

Important Remarks:

1. Non-amateur equipment is excluded: Devices used for commercial communications (e.g. walkie-talkies), public safety or broadcasting are governed by different rules such as fcc part 90 (Land Mobile Radio) or Part 95 (Personal Radio Services).

2. Modified equipment may require recertification:

 Unauthorized modifications (e.g., replacing transmitter modules) could classify it as an entirely new model and necessitate an independent compliance test to comply with Part 97.

FCC Part 97 Test Items

Testing under FCC Part 97 focuses on transmitter performance, receiver performance and electromagnetic compatibility (EMC). Key metrics (primarily under 47 CFR 97.307–97.317) may include:

1. Transmitter Performance Tests, Part One \[Wikipedia]

1. Transmitter Tolerance

2. Output Power

3. Spurious Emissions \[in-band and out-of-band spurious emission emissions]

4. Modulation Characteristics, Pt II: (this part not available)

FM, AM and digital modulation transmitters for radio communications (e.g. APRS and D-Star).

2. Receiver Performance Tests \[1,2,3,4,5]

1. Sensitivity

2. Selectivity

3. Intermodulation Rejection

3. EMC and Safety Testing

These requirements for EMC/Safety testing encompass:

(a) Conducted Emissions

(b) Radiated Emissions

(c) Safety Requirements: Must meet FCC Part 2 telecom safety standards including;

Insulation resistance >= 1MO

Dielectric withstanding voltage >= 1500V are required for proper performance of insulation systems.

4. Verifying Labeling and Documentation

a. fcc id Marking: Device must be permanently labeled with its FCC ID (format "Grantee Code- Product Code", such as "ABCD12345") on its enclosure.

b. Technical Documents (TDs): These may include technical documents related to testing requirements as outlined by FCC (such as Certificate of Conformance (CC).

1. User Manual with Frequency Ranges, Power Limits and Operational Warnings

2. Circuit Diagrams

3. Test Report Summaries

4. Additional Materials to Inform Compliance Requirements

FCC Part 97 Certification Process

Pre-Testing: Technical and Document Prep and Product Evaluation

2. Documentation Prep (For Product and for Document):

 Whilst Step One verifies whether your product falls within Part 97 scope; Phase Two provides key technical parameters (frequency, power consumption and modulation), and finally Round Three includes Documents Prep.

①　Technical Specifications

②　Bill of Materials (BOM)

③　Antenna Details (annular details)

④　English User Manual

⑤　Component List (RF Chips and Filter Models)

3. Sample Preparation:

 In general, three to five fully functional engineering prototypes will need to be created; additional units may be necessary for durability/lifetime testing.

Laboratory Testing Phase (Headed by JJR Lab)

1. Test Kickoff Meeting:

 JJR lab and the applicant work to define a six to eight week test plan and confirm critical items (e.g. frequency tolerance or spurious emissions).

2. Segmented Testing Sessions:

3. RF Performance testing: Spectrum analyzers, signal generators and power meters are used to verify TX/RX parameters.

4. emc testing: EMC testing takes place in shielded rooms using current probes in order to measure power line noise levels.

5. Safety Testing: Withstand and insulation resistance testers are used for electrical safety verification purposes.

6. Rectifying Failed Tests:

 If any test fails (e.g., excessive emissions), JJR issues a Test Non-Conformance Report and requests that the applicant make necessary modifications (filter tuning/shielding upgrades etc) prior to retest.

Report Review and FCC Certification

1. Test Report Issuance:

 JJR provides comprehensive reports compliant with fcc standards (including raw data, charts, and conclusions).

2. Submit for Telecommunication Certification Body Review:

 To submit for review by a Telecommunication Certification Body such as TUV SUD or Intertek. Applicants upload test reports, technical documents and FCC ID applications using an FCC online system such as IBFS for review by an official from that body.

3. Certification Issuance:

 Once compliance has been verified, the FCC database lists certified devices. Applicants can view certification status on [FCC's official site](https://www.fcc.gov/) before products may be sold with the fcc id label in the U.S.

Testing Timeline and Time Frame Reducing Services

In-House testing typically lasts 6–8 weeks before remediation occurs (depending upon applicable fees); expedited service could reduce this to 4 weeks (subject to additional fees).

mes JJR marks every unit to prevent substitution.

Post-Market Surveillance:

FCC may conduct random compliance checks and units that do not conform may face revocation of certification and mandatory recalls.