October 6, 2026
CB radio (PX)
Based on the former Resolution 444/2006, kept in force until Anatel issues new technical rules.
| Parameter | Value |
|---|---|
| Frequency band | 26.960 to 27.860 MHz |
| Channel spacing | 10 kHz |
| Modulation | AM or FM |
| Maximum bandwidth | 8 kHz (DSB) / 4 kHz (SSB) |
| Channels subject to ISM interference | 1 to 28 (prefer channels above 28 for operational traffic) |
| Typical antenna length (quarter wave) | About 2.7 m |
| Registration | Free, through the Mosaico System, no expiration date |
| Station license | Not required (restricted radiation service) |
Amateur radio (PY)
Qualification classes (COER)
| Class | Minimum age | Maximum power | Band access |
|---|---|---|---|
| C | 10 years | 100 W | Partial |
| B | — | 1,000 W | Partial |
| A | — | 1,500 W | All bands |
Licensing
| Item | Rule |
|---|---|
| Station license validity | 20 years (or 10, upon request) |
| Renewal deadline | Request in Mosaico 3 months before expiration |
| Entity station (civil defense, university, nonprofit) | Responsible party needs Class A |
| National Calling Frequency (2 meters) | 146.520 MHz |
Emergency-specific rules
- Emergency communications take priority over any other traffic; other operators must clear the frequency.
- Transmitting on more than one band at the same time is allowed.
- Repeaters may transmit without a time limit.
- A person without a COER may operate the station in the presence of the responsible amateur radio operator.
Equipment type approval
Every piece of equipment used in Brazil, including CB, amateur radio, and unlicensed radios, must be certified or type-approved by Anatel, including homemade equipment. Modifications that take a radio outside its approved conditions can be treated as a violation.
Sources
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