26
Recommended Separations Distances for the AutoAlert
The AutoAlert is intended for use in the electromagnetic environment in
which radiated disturbances are controlled. The customer or user of the
AuotAlert can help prevent electromagnetic interference by maintaining
a minimum distance between portable and mobile RF Communication
Equipment and AutoAlert as recommended below, according to the
maximum output power of the communications equipment.
Max Output
Power (Watts)
Separation (m)
150kHz to 80MHz
d = 1.17√P
Separation (m)
80 to 800MHz
d = 0.35√P
Separation (m)
800MHz to 2.5GHz
d = 0.70√P
0.01
N/A
.035
.07
0.1
N/A
.11068
.22136
1
N/A
.35
.7
10
N/A
1.1068
2.2136
100
N/A
3.5
7
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:
At 80 MHz and 800 MHz, the separation distance for the higher
frequency range applies.
NOTE:
These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures,
objects, and people.
