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Yes, I have been trying (unsuccessfully) to get my head around how the test setup would translate into a practical application. And that the certification appe
by deepspace 9y ago
Yes, I have been trying (unsuccessfully) to get my head around how the test setup would translate into a practical application. And that the certification appears to violate the FCC's own 30dBm power limit in the 900MHz ISM band. Very strange.
- phasetransition 9y agoThe ISM field strength levels here are defined in 47 Part 18.305. they are measured in an anechoic chamber and inverse square law scaled to the field strength at the stated distance. Source: I used to work with RF lighting devices, which need to meet the levels of 18.305(c), and were usually tested the same way in pre-compliance before final OATS testing.