nrf53-series

FCC Title 47 CFR Part 15.247

The Nordic Thingy:53™ complies with the radiated emission limits in the FCC Title 47 of the Code of Federal Regulations (CFR) Part 15 Subpart C – Intentional radiators when the nRF5340 TX output power and nRF21540 gain configurations are set according to the following protocol-specific channel maps.

Table 1. BLE1M
Setting/Frequency 2402–2480 MHz
nRF5340 TX output power –3 dBm
nRF21540 gain 20 dB
Conducted output power nRF21540 ANT1 PORT 16.24 dBm (2402 MHz)

14.08 dBm (2440 MHz)

14.32 dBm (2480 MHz)

Table 2. BLE2M
Setting/Frequency 2404–2474 MHz 2476 MHz 2478 MHz
nRF5340 TX output power –1 dBm –4 dBm –8 dBm
nRF21540 gain 20 dB 20 dB 20 dB
Conducted output power nRF21540 ANT1 PORT 16.95 dBm (2404 MHz)

14.82 dBm (2440 MHz)

14.05 dBm 11.47 dBm (2478 MHz)
Table 3. 802.15.4
Setting/Frequency 2405–2475 MHz
nRF5340 TX output power 0 dBm
nRF21540 gain 20 dB
Conducted output power nRF21540 ANT1 PORT 17.22 dBm (2405 MHz)

15.24 dBm (2444 MHz)

15.70 dBm (2475 MHz)