A transition period affecting how certain short-range radio devices are certified in Brazil has now ended. As of 6 October 2026, the exemption that allowed some digitally modulated restricted-radiation equipment to be certified without meeting the minimum 6 dB bandwidth requirement no longer applies to new conformity assessments.
The change stems from Ato ANATEL nº 14.158 (published 1 October 2025), which updated the technical requirements for restricted-radiation radiocommunication equipment and repealed the exemption in item 10.3.4.4 of Ato nº 14.448/2017. A separate act, Ato nº 4.746 (published 2 April 2026), set the transition period that has now closed.
What Has Changed
Previously, equipment evaluated under item 10.3.4 could rely on an exemption (item 10.3.4.4), meaning the minimum 6 dB bandwidth requirement did not apply and spurious emissions could remain at the 20 dB level.
With the exemption repealed, new certifications must now comply with the standard requirements:
- Minimum 6 dB bandwidth of 500 kHz (item 10.3.1), applying to direct-sequence and other digitally modulated systems.
- Spurious (out-of-band) emissions of 30 dBc (item 10.6), updated from the previous 20 dB level.
Any product entering ANATEL conformity assessment under item 10.3 from 6 October 2026 must demonstrate a 6 dB bandwidth of 500 kHz or more.
Who Is Affected
The change particularly affects narrowband technologies such as LoRa-type devices, which previously qualified under item 10.3.4 but typically cannot meet the 500 kHz 6 dB bandwidth threshold. For these products, test reports prepared under the old exemption will no longer support new certification filings.
Importantly, existing approvals remain valid. Devices homologated before 6 October 2026, including those coming up for renewal, are not affected and may retain the corresponding previous requirements during certification maintenance, in line with the applicable transitional provisions.
Why This Matters
For manufacturers of sub-1 GHz short-range and IoT devices, the practical impact is on new certifications. Products that relied on the narrowband exemption will need their compliance re-evaluated against the 500 kHz bandwidth and 30 dBc emission requirements, and in some cases this may require design or configuration changes, or fresh testing, since older lab reports built on the exemption are no longer sufficient for new filings.
Planning this early helps avoid delays, particularly for product lines built around LoRa or other narrowband modulation that may not naturally meet the 500 kHz threshold.
What Manufacturers Should Do Now
Businesses placing restricted-radiation radio equipment on the Brazilian market should:
- Identify which of their sub-1 GHz products were certified under the item 10.3.4 exemption.
- Review those products against the 500 kHz minimum 6 dB bandwidth (item 10.3.1) and 30 dBc spurious emission (item 10.6) requirements.
- Confirm whether existing test reports can support new filings, or whether re-testing is needed.
- Check the status of existing approvals and upcoming renewals, which remain valid under the transitional provisions.
To read the official documentation (Portuguese only), refer to Ato ANATEL nº 14.158 and Ato nº 4.746, which amend Ato nº 14.448/2017, available on ANATEL’s legislation portal.
How C-PRAV Can Support You
C-PRAV helps manufacturers and importers achieve global market access for radio and wireless products, including ANATEL certification and homologation for the Brazilian market. Our team can assess your sub-1 GHz and LoRa-type devices against the updated bandwidth and spurious emission requirements, carry out the necessary radio testing, and prepare and manage the certification documentation needed to keep your products compliant under the new rules.
Have questions? We’re here to help.