Executing FCC Section 2933 Change in Identification Filings

Mechanism

Title 47 of the Code of Federal Regulations Section 2.933 permits an entity to obtain an independent Federal Communications Commission equipment authorization based on an existing grant. This process lets a new grantee establish a distinct equipment identifier without subjecting the hardware to redundant electromagnetic compatibility or radio frequency exposure chamber testing. The route relies entirely on compliance data from the original certification, provided the device undergoes no physical, electrical, or operational changes.

Operational Scope of Title 47 CFR Section 2.933

Transmitter equipment certified by an original manufacturer frequently enters retail channels under secondary branding, with Section 2.933 providing the legal and technical basis for the practice. When applying for a change in equipment identification, the original grant remains fully active and valid. The original manufacturer retains its equipment authorization code, while the applicant receives a separate grant under its own grantee and product codes.

Grantee codes cost fifty dollars. Using this route requires establishing that the secondary product is identical to the previously certified unit. The Federal Communications Commission Equipment Authorization System tracks the lineage between initial and secondary grants, ensuring any audit, market surveillance query, or field interference report traces directly back to the primary laboratory measurement record.

Which Authorization Route Preserves Original Compliance Test Data?

Choosing between a secondary equipment filing, a permissive change, or full certification determines whether historical laboratory test data carries forward. A Section 2.933 submission references the original grant holder’s complete test report portfolio, whereas Section 2.929 corporate transfers reassign the entire grantee code entity to a new corporate owner and update every grant under that prefix. Any hardware change, however, breaks eligibility for this path.

A Section 2.933 submission references 100 percent of underlying transmitter test data from the original filing when zero physical or electrical modifications exist.

Selecting the appropriate regulatory trajectory requires choosing an administrative path aligned with corporate structure and technical control. The criteria below outline when to select Section 2.933 over alternative regulatory filings.

• Grantee Code Control The applicant holds an active three or five character grantee code registered in the FCC Commission Registration System.
• Hardware Consistency Production runs maintain identical bill-of-materials components on all radio frequency and digital logic paths.
• Original Grantee Permission The original certification holder provides an executed authorization letter granting access to historical test records.
• Market Acceleration Commercial distribution schedules demand regulatory approval within two weeks of document preparation.

Submitting a filing under Section 2.933 when underlying electrical modifications exist results in immediate revocation of the equipment grant and customs impoundment of imported inventory.

Conditions

Eligibility for duplicate authorization hinges on absolute hardware identity between the original certified device and the rebranded unit. The Federal Communications Commission maintains strict boundaries on what qualifies as identical. Any deviation in component layout, shielding, passive filtering, or firmware control invalidates the filing, requiring an original equipment certification or a permissive change.

Hardware Identity and Circuitry Equivalence Thresholds

Printed circuit board layouts, passive filtering stages, integrated RF transceivers, and firmware power tables must stay identical across both product iterations. Swapping a passive capacitor or inductor for an equivalent part from an alternate vendor is permissible only when nominal electrical values, tolerances, and physical packaging match precisely. If a redesign alters trace impedance, ground plane continuity, or transmission line geometry, radiated emissions shift and nullify the original test report.

Because antenna gains directly affect exposure limits, software-defined radio features and firmware parameters present strict boundaries during identification changes. Operating parameters programmed into read-only memory cannot be expanded or altered to enable additional frequency bands, higher maximum output power, or different modulation schemes beyond those approved in the original authorization. The secondary applicant certifies under penalty of perjury that equipment under the new identifier operates strictly within the parameters verified in the initial filing.

Physical Enclosure and Antenna Placement Limits

Modifications to external housing materials can alter parasitic capacitance and radiative field patterns. Enclosing a certified module or board-level radio within a dense metallic housing or adding internal structural ribs near the radiating element distorts spurious harmonic paths. The secondary applicant must verify that the physical geometry surrounding the antenna remains unchanged from the original test setup.

UL 969 testing proves label adhesion.

Disqualifying conditions frequently arise during product adaptation. The list outlines specific technical shifts that instantly terminate Section 2.933 filing eligibility.

• Circuitry Revision Alternate component substitutions on the primary RF path shift harmonic emissions past regulatory margins.
• Firmware Power Escalation Unlocking transmitter power settings beyond original grant limits generates non-compliant spurious transmissions.
• Enclosure Material Substitution Transitioning from non-conductive plastic to metallized plastic enclosure shells modifies cabinet radiation profiles.
• Antenna Gain Alteration Connecting a higher-gain external radiating element exceeds peak permissible effective isotropically radiated power limits.

While minor trace re-routing might seem trivial, Telecommunications Certification Bodies reject filings that lack identical circuit layout documentation.

Mark

External housing identification rules dictate how regulatory compliance information is attached to physical hardware. Every radio frequency device authorized by the Federal Communications Commission carries a unique identifier made up of a grantee code and an equipment product code. When executing a Section 2.933 change in identification, physical product markings must be updated to reflect the new authorization credentials.

Grantee Code Assignment and Label Formatting

Assigning a distinct identifier requires registering with the Federal Communications Commission to obtain a three or five character company prefix. The secondary grantee appends a product code of up to fourteen characters using alphanumeric characters and hyphens, creating the full identifier string affixed to the product housing.

Physical labels must remain legible throughout the product’s operational lifecycle. Etching, engraving, silk-screening, or adhesive polymer labels meeting UL 969 standards satisfy regulatory permanence requirements. The secondary grantee must ensure the original manufacturer identifier is entirely removed or permanently covered by the new regulatory mark.

Physical Label Placement and Electronic Display Provisions

Devices with integrated screens can use e-labeling provisions under specific conditions. Guidance detailed in KDB 784748 allows displaying the identifier code, warning statements, and regulatory notices electronically, provided the user can access the information within three menu steps. Temporary removable exterior labels remain mandatory on packaging or device housings so customs officers can inspect compliance without powering on the unit.

Section 2.925 of the federal rules invalidates equipment authorization when physical product labels fail permanent adhesion standard UL 969.

Authorization letters require signed execution, and confidentiality requests carry separate fees once recorded in the FCC database. Purchase contract clause 14.3 specifies that secondary grantees maintain exclusive liability for housing label compliance, shifting border enforcement financial risks away from the original module manufacturer.

Dossier

Constructing a complete application package requires assembling administrative declarations, physical photographs, and original authorization letters. Telecommunications Certification Bodies review exhibit packages uploaded into the Equipment Authorization System on behalf of the Federal Communications Commission. Deficiencies in exhibit indexing or missing signatures cause immediate processing delays that push back launch timelines.

Mandatory Exhibits for Telecommunications Certification Body Submissions

Telecommunications Certification Bodies examine specific documentation before approving secondary equipment grants. Under Section 2.933(b), four core documents form the primary dossier. The filing begins with a Letter of Authorization signed by the original grantee contact person listed in the Commission database, confirming permission for the applicant to reference the original test results and administrative files.

The applicant also drafts a Section 2.933 Declaration of Equivalence, attesting that the equipment marketed under the new identifier is electrically and physically identical to the original certified unit. The third exhibit contains external photographs showing the rebranded product, alongside high-resolution artwork of the new identifier label and its exact placement. The final exhibit includes an updated user manual containing required compliance notices under Part 15 subpart B and C.

Confidentiality Scope and Original Test Report Integration

Protection of proprietary schematics, block diagrams, and operational descriptions carries over from the original filing under 47 CFR Section 0.459. The secondary applicant cannot access or modify confidential exhibits without explicit authorization. The Equipment Authorization System automatically links the secondary filing to the primary grant’s confidential files, shielding internal intellectual property from public view while maintaining regulatory verification.

Short-term confidentiality requests for external photographs, test setup pictures, and user manuals require separate declarations. Applicants can request withholding periods of up to 180 days from the grant date to keep pre-market branding hidden from competitors.

Permissive changes depend on access to original test data. While TCB filing fees vary widely, resolving documentation issues early prevents shipping delays.

Worked Exhibit Mapping and Filings Workflow

Executing a filing sequence for a dual-band Wi-Fi module illustrates the process. For example, an industrial gateway vendor purchases a certified 802.11 b/g/n transceiver module bearing original Grantee Code 2AAXX and Product Code MOD100, intending to market the device inside a terminal under Grantee Code 2BBYY and Product Code GATEWAY01.

The primary vendor executes a permission letter referencing the original grant date 04/12/2021 and FCC ID 2AAXX-MOD100. The secondary vendor generates CAD renderings and photographs showing the gateway housing with label artwork for 2BBYY-GATEWAY01. The submission workflow follows a set progression:

1. Obtain an active Grantee Code from the FCC Commission Registration System.
2. Request a formally signed Letter of Authorization from the original grantee code contact person.
3. Draft the Section 2.933(b) Declaration of Equivalence stating zero physical or electrical changes.
4. Photograph the new device enclosure showing the physical label location and detailed label artwork.
5. Submit Form 731 exhibit package to an accredited Telecommunications Certification Body for review.
6. Verify public grant issuance on the FCC Equipment Authorization System database.

An authorization letter from the original grantee remains valid throughout TCB review until grant issuance prevents administrative dismissal.

Industry practice leaves open whether a secondary grantee can maintain authorization if the original grantee code holder undergoes bankruptcy and corporate dissolution.

Slot

Scheduling filing reviews and calculating administrative fees directly affects commercial launch timing. An expedited review route allows hardware importers to align regulatory clearances with factory production cycles. Understanding fee structures, review queues, and post-grant maintenance limitations helps product teams manage capital outlay without missing deadlines.

TCB Review Timelines and Administrative Processing Costs

Budget allocations for secondary authorization filings differ substantially from original testing costs. A full original certification campaign takes six to twelve weeks, requiring test chamber bookings, engineering redesign cycles, and report fees ranging from $6,000 to $18,000. A Section 2.933 filing bypasses chamber measurements entirely, lowering direct compliance expenses to Telecommunications Certification Body review fees and Federal Communications Commission filing charges.

TCB fees for change-in-ID reviews typically range from $800 to $1,500 per filing, depending on confidentiality requests. The FCC Form 731 processing fee adds $50 to $70, and documentation processing generally takes five to ten business days from upload to public grant posting.

Post-Grant Maintenance and Class II Permissive Change Restrictions

Managing product updates after grant issuance creates ongoing compliance obligations. Once a Section 2.933 grant is issued, the secondary grantee holds independent administrative control over its identifier. If the grantee later substitutes an internal antenna or alters the plastic enclosure, it must determine whether Class II Permissive Change provisions under KDB 996369 apply.

Executing a Class II Permissive Change on a secondary grant requires access to original test data and baseline chamber measurements. When the secondary grantee lacks direct ownership of those laboratory records, performing Class II modifications requires submitting supplemental chamber test reports under its own identifier.

TCB processing speed depends on documentation alignment rather than laboratory queue availability.

Securing clear authorization documentation from suppliers before placing production orders avoids costly warehouse holds at customs.