Heli-Coder 4 Transmitter Operation Manual | Doc. No. 6051452100 Rev. C
Broadcast Microwave Services, Inc.
3
Use the formula from OET65 to determine the minimum recommended distance according to your individual usage
circumstances.
Your organization should develop an understanding of its unique RF usage and create a plan to train personnel
regarding recommended exposure limits according to the FCC and EU recommendations.
General Safety Rules;
a) Do not operate the transmitter or power amplifier with covers removed.
b) Never walk in front of directional antennas when radiating.
c) Switch off supplies before removing covers or disconnecting any RF cables, and before inspecting damaged
cables or antennas.
d) BMS recommends returning the HC4 to the factory for service or repair.
In addition you can limit your exposure by raising awareness and using some common sense rules.
Default to low power if available using hi-power only as required.
Never stand in front of a transmitting directional antenna.
Limit transmission duty cycles (turn on/off as needed).
Table 1 MPE per FCC OET65 (1.5 GHz to 100 GHz)
TRANSMITTER OUTPUT (w)
10
ANTENNA GAIN dBi
0
2
4
6
9
11
14
22
UNCONTROLLED ENVIRONMENT:
MINIMUM PERMISSABLE
DISTANCE INCHES
1.005 mW/cm2
11.08
13.95
17.56
22.10
31.22
39.31
55.52
139.47
CONTROLLED ENVIRONMENT:
MINIMUM PERMISSABLE
DISTANCE INCHES
(5.005 mW/cm2)
4.96
6.25
7.87
9.91
13.99
17.61
24.88
62.50
NOTE: Calculations do not factor reflections
