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Atlas Compliance & Engineering, Inc.
1792 Little Orchard Street
San Jose, CA 95125
Phone 408.971.9743
Fax 408-971-9783
Web www.atlasce.com
Part 15.107(b) and 15.109(b & g) Limits
Table 5 - Class A 10-Meter Distance Radiated Limits
Frequency
MHz
Limit
dB
V/m
Limit
V/m
30-230
40
100
230-1000
47
223
Above 1000 @ 3m
59.5
944
Table 6 - Class B 10-Meter Distance Radiated Limits
Frequency
MHz
Limit
dB
V/m
Limit
V/m
30-230
30
30
230-1000
37
70
Above 1000 @ 3 meters
54
500
Table 7 - Class A Power Line Conducted Limits
Frequency
MHz
Limit
Quasi-Peak dB
V
Limit
Average dB
V
0.15-0.50
79
66
0.50-30
73
60
Table 8 - Class B Power Line Conducted Limits
Frequency
MHz
Limit
Quasi-Peak dB
V
Limit
Average dB
V
0.15-0.50
66-56
56-46
0.50-5
56
46
5-30
60
50
NOTE:
1.
The lower limit shall apply at the transition frequencies.
2.
Distance refers to the distance in meters between the measuring instrument antenna and the closest
point of any part of the device or system.
3.
Both Quasi-Peak and Average limits for power line conducted testing must be met.
4.
If the average limit is met when using a quasi-peak detector, the EUT shall be deemed to meet
both limits and measurement with the average detector is unnecessary.
5.
For Class B ITE conducted emissions the limit decreases linearly with the logarithm of the
frequency in the range 0.15 MHz to 0.50 MHz.
