Question: For a Base Station (BS) capable of multi-band operation, how should electromagnetic compatibility (EMC) testing be conducted according to specifications?
Option 1: Only on the primary operating band, with other bands assumed compliant by default.
Option 2: On a randomly selected subset of supported operating bands, to reduce testing time.
Option 3: For each supported operating band, unless otherwise specified, with all bands assessed during tests.
Option 4: Solely on the band with the highest frequency, as it is most representative of EMC challenges.
Explanation: This option correctly reflects the requirement that for BS capable of multi-band operation, the EMC testing must be performed for each supported operating band unless otherwise stated. This ensures comprehensive assessment of the BS's electromagnetic compatibility across all its operational frequencies, guaranteeing compliance and minimizing potential interference issues in diverse deployment scenarios.