8. EMC Compliance Recommendations
8.1 Recommendations for 169 MHz ETSI EN 300-220-1 compliance
As it was shown in the previous section, the conducted spectrum BRD4174B Mighty Gecko Radio Board is compliant with the emission
limits of the ETSI EN 300-220-1 regulation with 19 dBm output power. For the radiated compliance, mounting a shielding can is re-
quired due to the unwanted harmonic radiation through the matching network components and PCB traces. With mounted shielding
can, all of the unwanted emissions are compliant with the regulation limits.
8.2 Recommendations for 2.4 GHz ETSI EN 300-328 compliance
As it was shown in the previous section, the radiated power of the fundamental of the BRD4174B Mighty Gecko Radio Board with
19 dBm output power exceeds the 20 dBm limit of the ETSI EN 300-328 regulation due to the high antenna gain, so reduction of the
fundamental power is required by approximately 1 dB in order to comply. The harmonic emissions are under the -30 dBm limit with a
large margin. Mounting a shielding can is required due to the sub-GHz compliance, but it is not required for the 2.4 GHz compliance.
8.3 Recommendations for 2.4 GHz FCC 15.247 compliance
As it was shown in the previous section, the BRD4174B Mighty Gecko Radio Board is compliant with the emission limits of the
FCC 15.247 regulation with 19 dBm output power. Mounting a shielding can is required due to the sub-GHz compliance, but it is not
required for the 2.4 GHz compliance.
BRD4174B Reference Manual
EMC Compliance Recommendations
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