Recommended separation distances between portable and mobile RF
communications equipment and the JC-615(NB-152U)
The model JC-615(NB-152U) is intended for use in the electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the model JC-615(NB-
152U) can help prevent electromagnetic inference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the model
JC-615(NB-152U) as recommended below , according to the maximum output power of the
communications.
SEPARATION DISTANCE ACCORDING TO FREQUENCY OF TRANSMITTER M
RATED MAXIMUM
150KHZ TO 80MHZ 80MHZ TO 800MHZ
OUTPUT POWER OF
TRANSMITTER W
0.01
0.117
0.1
0.369
1
1.167
10
3.689
100
11.667
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in meters(m) can be estimated using the equation applicable to the
frequency of transmitter, where P is the maximum output power rating of the transmitter in
watts (W) according to the transmitter manufacturer.
Note 1 At 80MHz and 800MHz, the separation distance for higher frequency range applies.
Note 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected
by absorption and reflection from structures, objects and people.
0.117
0.369
1.167
3.689
11.667
57
800MHZ TO 2.5GHZ
0.233
0.738
2.333
7.379
23.333