Service Manual

XFIN-BLADE-SM
RADIO FREQUENCY HAZARD INFORMATION PAGE 79
C. RADIO FREQUENCY HAZARD INFORMATION
RF Hazard Test conducted by EMC Technologies (NZ) Ltd - test report no. 70232.1.
Report date: 26 March 2007.
Test report is as follows:
As per Section 1.1310 and Section 2.1091 certification of this transmitter is sought
using the Controlled / Occupational exposure limits as detailed in OST/OET Bulletin
Number 65 as a power of 100 watts is to be used in a fixed environment.
Calculations have been made using the General Public/Uncontrolled Exposure limits.
Minimum safe distances have been calculated below.
Power density, W/m
2
= E
2
/3770
- Occupational / Controlled Exposure limit will be 1.46 mW/cm
2
(f/300 = 440 MHz/300)
- General Population / Uncontrolled exposure limit will be 0.29 mW/cm
2
(f/1500 = 440 MHz/1500)
The minimum distance from the antenna at which the MPE is met is calculated from the
equation relating field strength in V/m, transmit power in watts, transmit antenna gain,
transmitter duty cycle and separation distance in metres:
E, V/m = (√ (30 * P * G)) / d
Controlled Uncontrolled
E = 1.46 mW/cm
2
= E
2
/3770 E = 0.29 mW/cm
2
= E2/3770
E= √1.46*3770 E= √0.29*3770
E = 74.2 V/m E = 33.1 V/m
The rated maximum transmitter power = 100.0 watts.
Transmitter operated using a quarter wave whip antenna with a gain of 2.15 dBi (1.64).
Controlled Uncontrolled
d = √ (30 * P * G*DC) / E
d = √ (30 * 100.0 * 1.64) / 74.2 d = √ (30 * 25.0 * 1.64) / 33.1
d = 0.94 metres or 94 cm d = 2.11 metres or 211 cm
Result: Complies