Expain 002, User Manual, Page: 13 / 14

BACKUP RELIEF BELT USER MANUAL Ver. 1.0
Unikia AS Sandakerveien 24c, Bygg c1, 0473 Oslo, Norway 11
NOTE 1 At 80 MHz and 800 MHz, 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.
*Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and
land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted
theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an
electromagnetic site survey should be considered. If the measured field strength in the location in which the
Backup Belt is used exceeds the applicable RF compliance level above, the Backup Belt should be observed
to verify normal operation. If abnormal performance is observed, additional measures may be necessary,
such as re ‐ orienting or relocating the Backup Belt .
** Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE AND MOBILE RF COMMUNICATIONS
EQUIPMENT AND THE BACKUP RELIEF BEL
Recommended separation distances between portable and mobile RF communications equipment and the
Backup Belt.
Separation distance according to frequency of transmitter m
Rated maximum output
power of transmitter W
kHz to 80 MHzd =1.17 √ P MHz to 800 MHzd
=1.17 √ P
MHz to 2.5 GHzd
=2.33 √ P
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.17 1.17 2.33
10 3.70 3.70 7.37
100 11.70 11.70 23.30
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, object.