nrf53-series

ETSI EN 300 328

ETSI EN 300 328 v 2.2.2, Ch 4.3.2.3 limits the power spectral density to 10 dBm/MHz for non-FHSS equipment. The Nordic Thingy:53™ conforms to this requirement 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 –5 dBm
nRF21540 gain 10 dB
Conducted output power nRF21540 ANT1 PORT1 5.6 dBm (2402 MHz)

6.4 dBm (2440 MHz)

6.1 dBm (2480 MHz)

Max. EIRP2 7.71 dBm (2402 MHz)

9.19 dBm (2440 MHz)

7.7 dBm (2480 MHz)

Table 2. BLE2M
Setting/Frequency 2404–2478 MHz
nRF5340 TX output power –5 dBm
nRF21540 gain 10 dB
Conducted output power nRF21540 ANT1 PORT1 5.6 dBm (2404 MHz)

6.5 dBm (2440 MHz)

6.2 dBm (2478 MHz)

Max. EIRP2 7.88 dBm (2402 MHz)

9.36 dBm (2440 MHz)

7.64 dBm (2480 MHz)

Table 3. 802.15.4
Setting/Frequency 2405–2480 MHz
nRF5340 TX output power –5 dBm
nRF21540 gain 10 dB
Conducted output power nRF21540 ANT1 PORT 6.1 dBm (2404 MHz)

6.8 dBm (2440 MHz)

5.9 dBm (2478 MHz)

1 Measured at Tnom = 25°C
2 Measured at Tlow = 0°C