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11.0
NOTE 1
With 80 MHz and 800 MHz the higher frequency range applies.
NOTE 2
These guidelines don´t like to be applicable in any case. The propagation of electromangetic sizes is
influenced by absorptions and reflections of buildings, objects and people.
a The field strength of stationary transmitters, such as base stations of cellular phones and mobile terrain radio
equipment, amateur radio transmitters, cbm broadcast and TV stations cannot be predestined exactly.
To determine the electromagnetic environment in regard to stationary transmitters, a study of the location is to
be considered. If the measured field strength at the location where the ATMOS Record 55
is used exceeds the above compliance level, the ATMOS Record 55 is to be observed to
verify the intended use. If abnormal performance characteristics are noted, additional measures might
be necessary, e. g. a changed arrangement or another location for the device.
b Within the frequency range of 150 kHz to 80 MHz the field strength is to be below 3 V/m.
11.4 Recommended separations between portable and mobile RF Communications
equipment and the ATMOS Record 55
The ATMOS Record 55 is intended for use in electromagnetic environment in which ratiated disturbances are
controlled. The customer or user of the ATMOS Record 55 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF Communications equipment and the ATMOS
Record 55 as recommended below, according to the maximum output power of the communications equip-
ment.
Nominal output of the
transmitter
0,01
100
For transmitters for which the maximum nominal output isn´t indicated in the above table, the recommended sepa-
ration distance d in meters (m) can be determined using the equation belonging to the respective column whereas
P is the maximum nominal output of the transmitter in watts (W) acc. to manufacturer´s specification.
NOTE 1 With 80 MHz and 800 MHz the higher frequency range applies.
NOTE 2 These guidelines are not applicable in any case. The propagation of electromagnetic sizes is
influenced by absorptions and reflections of buildings, objects and people.
Separation distance, depending on transmit-frequency m
150 kHz bis 80 MHz
d = [ 3,5 / 3] √P
W
0,1
1
10
80 MHz bis 800 MHz
d = [ 3,5 / 3] √P
0,12
0,37
1,2
3,69
11,66
800 MHz bis 2,5 GHz
d = [ 7,0 / 3] √P
0,12
0,37
1,2
3,69
11,66
0,24
0,74
2,4
7,38
23,32
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