Appendix 119
Table A3
Recommended Separation Distances Between Portable and Mobile RF
Communications Equipment and the Guardian RT
The Guardian RT is intended for use in an electromagnetic environment in which RF
disturbances are controlled. The user of the Guardian RT can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the Guardian RT as recommended below,
according to the maximum output power of the communications equipment.
Rated Maximum
Output Power of
Transmitter (W)
Separation Distance According to Frequency of
Transmitter (m)
80 MHz - 800 MHz
d = 1.2 x square root [P]
800 MHz - 2.5 GHz
d = 2.3 x square root [P]
0.01
0.12
0.23
0.1
0.38
0.73
1
1.2
2.3
10
3.8
7.3
100
12
23
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 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.
Summary of Contents for Guardian RT MMT-7900
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