168
en
Recommended working clearances between portable and
mobile HF communication devices and the UNIT
The device is intended for use in an electromagnetic environment in which radiated RF disturbances
are controlled. The customer or the user of the device can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the device 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 the transmitter (m)
From 150 kHz
to 80 MHz
d = 1.2
From 80 MHz
to 800 MHz
d = 1.2
From 800 MHz
to 2 GHz
d = 2.3
0.01 0.12 0.12 0.23
0.1 0.38 0.38 0.73
11.2 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 meters (m) can be determined 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.
Notes:
(1) At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
(2) These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
9.6.11_VDW.SILVER_RECIPROC Upgrade Stick_inhalt.indd 1689.6.11_VDW.SILVER_RECIPROC Upgrade Stick_inhalt.indd 168 09.06.2011 17:18:1509.06.2011 17:18:15
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