User's Manual

RF EXPOSURE WARNINGS TO USERS
SATEL-TA11 radio modem module
FCC ID: MRB-SATEL-TA11
INFO LETTER
May 19
th
, 2009 / MaritaL
Page 2 of 2
Safe distances for General Public Use
()
2
150/4 mWf
PG
R
π
=
Due to numerous different applications, it is reasonable that users are not always aware of parameters of
all components in a SATEL-TA11 radio modem system. However, obeying the safe distances in the table
below, every user can easily fulfil the Canadian authority limit (depends on the frequency in use) for
human exposure to radio frequency radiation in general public use.
Radio Modem Model
Minimum safe distance to the antenna
For General Public use
SATEL-TA11
F
87 cm
Safe distances for Controlled Use
Calculated by formula below:
()
2
30/4 mWf
PG
R
π
=
Minimum distance however being always at least 20 cm.
Advanced users and system designers who are fully aware of key parameters of SATEL-TA11 radio
modem system are allowed to follow the safe distances for controlled use listed in the table below.
Tx output
power
[W]
Antenna system
gain
[dBi / numeric]
Tx duty cycle
[%], 6 min.
average
Frequency
[MHz]
Minimum safe
distance
[cm]
1.0
14 / 25.12
100 403/470 38.6/35.7
50 403/470 27.3/25.3
20 403/470 20
10 403/470 20
8 / 6.310
100 403/470 20
50 403/470 20
20 403/470 20
10 403/470 20
6 / 3.981
100 403/470 20
50 403/470 20
20 403/470 20
10 403/470 20
2 / 1.585
100 403/470 20
50 403/470 20
20 403/470 20
10 403/470 20
0 / 1.000
100 403/470 20
50 403/470 20
20 403/470 20
10 403/470 20
0.5 6 / 3.981
100 403/470 20
50 403/470 20
20 403/470 20