Appendix

Recommended Separation Distances between Portable and Mobile RFCommunications Equipment and Devices or the CR-2

The CR-2 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.

The customer or the user of the CR-2 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the CR-2 as recommended below, according to the maximum output power of the communications equipment.

Rated maximum output

Separation distance according to frequency of transmitter

 

m

 

power of transmitter

 

 

150 kHz to 80 MHz

80 MHz to 800 MHz

800 MHz to 2.5 GHz

W

d = 1.2 √P

d = 1.2 √P

d = 2.3 √P

 

0.01

0.12

0.12

0.23

 

 

 

 

0.1

0.38

0.38

0.73

 

 

 

 

1

1.2

1.2

2.3

 

 

 

 

10

3.8

3.8

7.3

 

 

 

 

100

12

12

23

 

 

 

 

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be estimated using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.

NOTE 1: At 80 MHz and 800 MHz, the separation distance for the 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.

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